Half-Life Walkthrough

Begin Document----------------------------------------------------
Submitted by JB@hotmail.com
HALF-LIFE WALKTHROUGH
General Tips
1.  Use your crowbar to break open every crate or box you see
(except
those labeled 'explosives'), they often contain health, HEV
cells, or ammo.
2.  Watch out for those damn tongue monsters -- those skinny
little tongues
can be hard to see, and hard to avoid even if you do see them
(other
enemies will frequently back you up into one you forgot).
3.  Even if you're a seasoned FPS player, take the Hazard Course
from the
main menu.  Not only is it cool, it will teach you a few new
moves that are
required to get though the game (like ducking at the peak of a
jump to raise
your legs and maximize your effective jump height, and the super
long jump).
4.  Not only can you push crates and boxes (by just running up
against them),
you can PULL them too.  Move up to a box and hold down "use", it
will follow
you around as long as you hold down the use button.   This is
critical to
remember for several areas.
5.  Save often (quicksave is F6 by default, and quickload is
F7), especially
before attacking a difficult area.
6.  Feel like a little low-budget (ammo-wise) whapping on a tank
or a
Bradley?  Check out Billings' cool piece over at CFTF.
7.  When faced with the alien-eaten scientists (those things
that have the
crab for a head and very sharp arms), note that they're so slow
that you don't
have to waste two shotgun shells on them; just run right up to
their face and
blast once. It takes a few seconds for them to fall but one shot
will do it.
Intro
Black Mesa Research Facility
Black Mesa, New Mexico
Load the game with "hl.exe -nointro" to skip the long, but cool,
intro.
Anomalous Materials
1) Follow the green stripe to the locker room, then go left to
the HEV room.
Press the button on the computer console to open the storage
door for the
suit.  Walk up to the suit in the chamber that just opened and
you'll don the
suit automatically.
Amusement:  Press the button on the main lobby guard's
desk
to watch everyone freak out.
2) Follow the blue stripe to the security door, the guard will
only open the
door for you if you're wearing your HEV suit.  Once inside, it's
a straight walk
down a few halls and up an elevator or two.  Use the buttons on
the elevators
to make them work.
3) Once inside the test lab, you'll have to listen to the two
scientists talk for a
bit, then they will open the door for you.
4) Inside the test chamber, climb to the platform, wait for the
switch on the
console to open, and then press the switch.
5) Climb back down and walk over to the cage.  When it opens,
get behind
the cart and push it into the particle beam.  Then pay
attention, this is a cool
part.
Unforeseen Consequences
1) Use the broken retinal scan panel to open the door, then exit
the test
chamber.  Make sure you pick up the crowbar you see by one of
the doors
on the way to the main lobby.
2) Find your way back to the main lobby security desk, then use
your
crowbar to smash open the vent panel by the floor on the right.
Go through
the hole into the vent.
3) There are a few headcrabs near the vent on the other side.
If you brought
the guard with you that you met in the hall (by Using him),
he'll shoot at least
one of them for you.  Also watch out for the exploding
computer.
4) Climb up and exit through the other air duct (smash it with
your crowbar to
open it -- get used to doing this, there are quite a few vents
in the game, and
many of them must be smashed with the crowbar or shot open with
a gun --
crowbar saves ammo, which you'll need).
5) Pick up the gun from the dead guard you'll find.  You could
also kill the
guard you had following you around (using the crowbar) and take
his gun,
but it's not necessary (and not very nice).
6) Keep walking to the end of the hall, kill the monster on the
other side of
the iron bar door (which you can't open).  Then drop down
through the
square hole into the sewer.  Inside the sewer there are two open
holes in the
roof (one you just dropped through) and one covered with a
grate.  Note the
location of the 2nd open hole before proceeding.
7) Find the concrete thing with the wheel valve control on it,
use it, then
walk/swim to the open grate you located.  You can then swim up
to the hole
and exit, and you'll be on the other side of the iron bar gate.
If you killed the
monster from the other side, this part will be a bit easier.
8) Use the big lever that's on the platform by the huge lift,
then run down and
get on the platform before it descends too far.  As you descend,
look behind
you.  Headcrabs will start falling after you.  Don't try too
hard to kill them, just
dodge them by moving to the side and opposite their direction of
motion as
they fly by.
9) Be careful on the steel-grating bridge.  It will break when
you step on it.
To get around to the opening on the left, jump up onto the
silver pipes and
walk around.  Once at the other side, you can try to jump for
the opening, or
break the grate to your right with the crowbar and crawl through
-- it takes
you to the same place.
10) Watch out for the hanging tongue things while crossing the
water.  You
can jump into the water, or push boxes in to make a bridge.  Go
left and up
the ladder, out the door, then in the other door.
11) Continue walking along the corridors until you find the
elevator.  Use the
button outside to open the door and walk inside, then use the
button inside
to activate the elevator.
Office Complex
1) Once outside the elevator break the grate on the wall by the
floor near the
electrical wire that's shooting sparks.  Stay clear of the wire,
and wait a bit
first so the headcrabs come for you and get zapped.  Crawl into
the vent
shaft.
2) Crawl to the right, bust the grate with the crowbar (watch
the scientist get
eaten by the tongue monster), and then jump down into the room.
Find the
electrical room door, go inside and turn off the main power.
The lights will
go off, so use your flashlight to navigate around the room
(watch for more
tongue monsters).   You can then open the door to the hall by
the elevator
and the electrical wire, which will now be safe to pass.
3) Break the glass in the window at the end of the hall and
climb through.
Then break through the crates to proceed.
4) Get the shotgun and shells from atop the green box, then kill
the alien that
attacks the guard behind the fence.  If you don't save him, you
can't get
behind the gate (he opens it for you if he's alive), and there's
some ammo
and health inside.  There is also ammo and health to be found by
busting the
crates below the catwalk.
7) Go to the flooded room, climb in and jump on objects to avoid
touching
the water (and electric shock).  Find the light switch on the
left wall and turn it
off to make the water safe to touch, then get the goodies from
the cabinets
before busting the vent on the left wall and climbing out of the
room.  Watch
out for the fan in the vent shaft (duck).
8) Move the small and large crates to make two steps up to the
ladder in the
hall by the locked door.  Break all the vent covers in the
shaft, but you might
want to save before exiting the last one -- there's a security
gun just outside.
9) Either duck and shoot the security gun with the shotgun to
destroy it, or
jump down and run for the switch under it to turn it off.
10)  Climb up the stairs after getting the guard follow you by
using him -- they
make for a great distraction target for the security guns you'll
run across.
Then go out the EXIT door and up the stairs.  There you'll find
another guard
to help you if you managed to get the other one killed.
11) Stop by the room to the left and down to pick up a few
grenades, the go
back to the right and break open the boarded-up exit with your
crowbar.
Walk through (the flashlight helps) and find the freezer door,
open it by using
the handle to the left.  But before entering the freezer, get
all the health and
ammo you can hold from the previous area -- once inside the
freezer you
can't go back out.
12) Inside the freezer, walk around to the left and find a red
switch.  Use it to
start the cart moving back and forth along the rail on the
ceiling.
13) Go back to the entry door and climb up the ladder, then
smash open the
vent and crawl through the vents and across the shelves until
you come out
near the track of the ceiling-cart.
14) When the cart moves by, jump on and cross to the other side.
You may
need to smash the crates on the cart with the crowbar to get on,
and you
may need to wait until the cart comes around again to get off at
the vent on
the other side.  Getting stuck between the cart and a wall or
shelf is fatal.
15) Keep climbing up the vent shaft and exit up to the left.
To the right there
is a dead guard and a few HEV power cells that might come in
handy.
16) Go up the stairs and find the open elevator shaft.  Inside,
on the far, wall
is a ladder to which you can just barely jump (don't jump too
early, and
consider saving before trying this one -- a fall is fatal).
17) Keep climbing up ladders until you can jump up on top of the
elevator.
There is no way to save the scientist who is hanging by his
fingernails above
you -- he'll fall as soon as you hit the elevator.
18) Once atop the elevator, find the access panel and smash it
open with
your crowbar and drop inside.  The panel is at the rear left,
and the flashlight
will help you find it more easily.
We've got Hostiles
(Maps in this chapter:  c1a3.bsp, c1a3a.bsp, c1a3b.bsp,
c1a3c.bsp,
c1a3d.bsp)
1) Watch out for security guns, trip wires (red lasers, which
activate sentry
guns in the area and close fire doors), and trip mine lasers
(blue lasers,
which will blow up the trip mine -- and you -- if crossed by
anything, including
an enemy).  It's pretty painful to take on a sentry gun head on
-- it's best to
avoid activating them at all by ducking under or jumping over.
If you do
activate one, strafe out from behind a wall or crate and take a
shot with your
shotgun (both barrels preferred, use Alt Fire) and then strafe
back to safety
before trying again.
2) When trying to creep through the area without activating
sentry guards (by
avoiding touching the red lasers), watch out for aliens that may
appear and
kill them quickly -- they can activate the guns as easily as you
can.   If you've
destroyed all the sentry guns in an area, it's safe to cross the
red lasers --
nothing will happen when you do (assuming you destroyed all of
the sentry
guns).
3) Creep past the lasers and guns (touching a sentry gun sets it
off also),
climb the crates and jump down to the hallway.  Watch out, there
are more
guns there.
4) There's a pretty hairy area with sentry guns, a wet slippery
floor, and an
open elevator shaft (a fatal fall).  You may want to grenade the
sentry guns in
this area to get past, then the red lasers are harmless.  Be
careful grenading
near fire doors, as breaking the glass on their wall switches
will close the
doors.  They can usually be re-opened with the switch on the
wall.
5) Make sure you don't cross a blue beam -- those are trip
mines, and they
blow up when you do.  They inflict heavy damage.  Also be
careful not to
push a crate or box into one, or move a box that a blue beam is
hitting.
6) Climb up the ladders to the exit. There you'll see a
scientist run to the
soldiers, thinking he's getting rescued.  While the soldiers
mercilessly
slaughter the scientist, blast them with grenades.   Note that
pressing the fire
button with a grenade in-hand pulls the pin, but you don't throw
it until you
release the button.  Try to time it so that the grenade explodes
soon after
hitting the target area, of the soldiers will run away before it
explodes (they
aren't stupid!)
7) Exit by using the freight elevator, then go out the firedoor
onto the
catwalk.  At the fork, go right.  Find the conveyor belt and
walk up it (the
wrong way), in the next room you can climb the crates to get
back onto the
conveyor belt and continue walking up it the wrong way.
8) Destroy the sentry guns below with a grenade, then jump down.
This is
much easier than trying to come through this area by the other
way (by not
using the conveyor belts).  Keep an eye out for the sentry gun
behind the
open fire door.
9) Climb the stairs in the warehouse and wait for the soldiers
and the aliens
to kill a few of each other before taking them on.  The soldiers
are tough in
this area, and they will try to flank you.  They are also deadly
accurate with a
grenade toss, so if you see one coming, take cover.
10) Walk up the catwalks to the top of the room and go down the
corridor.
Kill all of the soldiers from this height advantaged position
before going onto
the floor.  Once down, take the elevator up to the surface.
Save here, it's
nasty up above.
11) If you kill the soldiers that the plane drops off, they will
just keep bringing
more.  Your best bet is to make a run for the bunker (to the
left, near the
middle of the outdoor area) -- running around the perimeter of
the area
seems a bit safer than the middle. 20) open the door to the
ventilation shaft,
go down to the bottom.   Once inside the bunker, dive down the
ladder as
quickly as possible and take cover.
12) In the vent system, drop past the (deadly) fan blades in the
far right
corner.  Then exit the fan chamber through the middle vent (the
others have a
few goodies in them, but are dead ends).
13) Once outside the vent, use the control on the computer panel
to open the
silo door, and then exit.
Blast Pit
(Maps in this chapter: c1a4.bsp, c1a4b.bsp, c1a4d.bsp,
c1a4e.bsp,
c1a4f.bsp, c1a4g.bsp, c1a4i.bsp, c1a4j.bsp, c1a4k.bsp)
1) Use your crowbar to break the barrier and duck under the
hazard
barriers.  Then enter the control room to your right and use the
switch there.
You can exit by using the freight elevator.
2) Jump up on the train, and press use to activate its controls.
When the big
arrow thing appears on your HUD, forward increases speed, and
back
decreases it.  Use again or strafe to either side to let go of
the controls and
leave the train.
3)  Running train at full speed will help you avoid hits from
the monsters in
the tunnel (and run over a few in the process).  Once you smash
through the
barrier, you can't stop the train.  So either stop right after
the barrier and
climb over the pipes up to the ladder, or prepare to swim to the
low box in
the center of the slime when you go flying off of the train.
4) Personally, I found flying through the air a lot of fun, and
it doesn't cause
much damage if you get out of the slime and onto a box pretty
quickly. You
can then jump to the other boxes and make your way to the
platform
opposite the slime.   Either way, next you can jump up onto the
walkway to
get to the ladder which leads you up into the pipe.
5) Next climb the ladder and get on top of the pipe so you can
walk past the
slime, and once inside the big slime-filled room, walk along the
upper pipes
and jump over the rail and onto the platform.  From there you
can take the
elevator up and out.
6) When exiting the elevator you'll run into an alien.  You can
shoot the
canisters next to it to cause an explosion that will kill it.
Make sure you're not
too close when you do.  It's tricky not to cause the explosion,
but if you can
manage to avoid it do so, otherwise you'll have to jump across
the bridge
that gets damaged in the blast.
7) Use the switch by the door to open up the airlock, and step
inside.
Another switch is waiting, which you must use to get through the
airlock.
Note that the scientist here in the test fire control room
cannot be saved --
he's a goner.
8) Before entering the test fire chamber, shoot the crates that
block the
ladder to your left.  It's much easier to do this now than while
you're trying to
creep past the tentacle.  If you break the boxes while inside
the chamber, the
tentacle will hear you and attack.
9) Note that the "Test Fire" switch on the panel cannot be
activated until you
turn on the power, oxygen, and fuel (this is how you destroy the
tentacle --
there is no other way).  You'll need to creep past the tentacle
at least twice to
activate these, and doing so can be tricky.  The easy way is to
walk (hold
down the 'walk' key if you have auto-run on) or crouch while
moving past him,
being careful to avoid the whapping tentacles.  The hard way is
to distract
the tentacle with grenades and/or shotgun blasts, causing it to
briefly retreat
into the hole while you run by.  Either way is nerve-wracking,
take your pick.
go to the second level from the bottom.
10) First we'll turn on the oxygen and fuel (although the order
is unimportant,
you could turn on the power first if you want).  Creep around
the tentacle and
through the door on the second floor of the test chamber.  Run
fast after
breaking the boards with your crowbar, because the tentacle will
hear you
and attack as soon as you do.  Walk across the bridge and follow
the red
and blue pipes down the halls.
11) Enter the sewer grate by ducking on top of it, aiming down,
and
smashing it with the the crowbar.  Follow along the pipe and
turn left at the
fork (right is a dead end), then climb the ladder.
12) Climb down the ladders to get below the huge fan.  Save
here, this is
tricky.  Turn on the switch and run immediately back up the
ladder, trying to
avoid the fan blades.  Once above it, wait until the fan spins
up to full speed
before proceeding.
13) Look up and notice the boards over the roof.  You have a
choice for
dealing with them:  the visually appealing way is to toss a
grenade
(assuming you have one) out above the blades and watch as it
flies up and
explodes through the boards.  If you have no grenades, or want
to save
them, just jump out above the fan blades (trust me :) and take
out the boards
with the crowbar once you float up to them.
14) Once above the boards, break the vent cover on the wall with
the
crowbar and climb through.  Ducking helps here.
15) Crawl along the shaft until you get to the Oxygen/Fuel
control room.  Turn
on (use) both switches on the control panel.  You'll know
they're both on by
the lights and the bubbles that will start flowing in the pipes.
Then exit by
climbing up the ladder and follow the blue and orange pipes back
to the
tentacle.
16) Next we'll turn on the power so we can make some tentacle
jerky.
Creep through the test fire chamber again and exit the door on
the lower
level.
17) Jump over the broken section of the metal walkway -- I know
it looks too
far to jump, but it isn't.  Just make sure you don't jump too
soon.   Save
before trying.
18) Before crossing the puddle of water round up all the boxes
and crates
you can find and build a bridge across it.  It's harmless now,
but once you
turn on the power it will become electrified, and then it's very
difficult to cross
and survive.  Make sure that you can jump onto and off of your
crate bridge
without touching even a drop of the water.  Update:  Keith sent
in a clever
strategy that doesn't require this preparation.  See #24 below
for details.
19) Walk over to the catwalk and use the elevator button.  Once
on the
elevator, use the button inside to start it up.  The elevator
will malfunction and
stop half way (or so) up the shaft.  As soon as it does, jump
off and grab the
ladder on the wall to your left.  If you wait too long, the
elevator will fall with
you in it and you'll take damage from the radioactive sludge at
the bottom
before you can climb back up the ladder on the wall.
Larry says you don't need to jump off right away, just wait
until it
starts falling again and when it's close to the platform jump
off. No
damage! (Sounds risky to me).
20) Once at the bottom, climb around on the pipes to avoid
touching the
radioactive sludge.
21) Climb the stairs to get to the power generator control area.
There are
two switches -- one on either side of the generator in the
center.  Both have
to be turned on to start up the generator, but make sure you are
not on top of
it when the second switch is activated, or you'll get fried.
22) Moving around the generator can be tricky.  Avoid getting
hit by the
fast-moving platform thing.  It'll kill you.  Just stand for a
few moments and
watch it run, you'll get the pattern and the timing so that you
can safely move
around.
23) Once the the power is on (you'll know if it is), leave the
way you came in.
There's a conveniently located ledge you can use to avoid damage
from
jumping off of the ladder.
24) Use your crate bridge to avoid touching the (now
electrified) water on
the way out.  If you forgot to do so, use one of Keith's
strategies:
You can get up on the large stationary box at the end of
the hall
(in order to get up on the pipes and walk around the wall
on the
pipes OVER the water) if you slide the other boxes up to it
then
do the Half-Life spasm jump. Run then hit the JUMP and
CROUCH keys simultaneously. I'm told this will get you up
there.
You will NEED this spasm jump later on in the game. (BTW,
you
don't need the Jump Pack thing for this jump.)
This is my solution that I found: I slid two boxes end to
end into
the water on the left side by the wall. Then I lined up two
more
boxes right next to those in the water. Then I stood on the
left pair
of boxes facing the second row of boxes. This is the weird
part --
I held down the USE key and strafed left. This sent the
second
row of boxes sliding out into the water. With the correct
slide I
was able to jump from box to box and get over the water
without
damage!!
25) Go back to the top and into the test fire control room by
the tentacle.  All
the lights on the panel should be lit (if not, you didn't turn
on power, fuel, and
oxygen).  Press fire and watch the action.  You'll probably take
a little heat
damage in the process since the doors will close and lock while
the test fire
is underway, but it's not fatal (and worth it :)
26) Enter the test fire chamber and leave the room through the
hole in the
floor in which the tentacle was sitting (save first, drowning is
common here).
Make sure you fall in the center of the hole, or you'll hit the
side on the way
down and die.  There's a nice .357 magnum waiting for you at the
bottom of
the water if you make it, so get it.
27) There are two fans at the bottom of the pool also; ignore
them, they can't
be broken open or used to escape.  Note that the pool looks as
if it is
surrounded by four equally spaced pipes, two on each side, but
one is
missing.  That missing pipe is your way out.  Swim up to that
side and up out
of the pool.
28) Continue walking on the pipes and go to the end.  When you
see the
wheel. jump off of that pipe into the one by the wall that has a
broken grate in
it.  Climb inside and keep walking, but be careful.  You'll
notice a slight
change in color of the pipe in one area, and that part is going
to break off
when you step on it.   Jump back immediately when the breaking
starts and
you can avoid going down with it, which causes a lot of damage.
29) Once the pipe breaks, assuming you didn't go down with it,
walk to the
left and drop down between the pipe and the steel beam.  You'll
land on the
ceiling of the room below, and then can jump the rest of the way
down.  Don't
worry too much about taking a few hits of damage; there are
health kits at
the bottom.
Power Up
(Maps in this chapter: c2a1.bsp, c2a1a.bsp, c2a1b.bsp)
1) Don't hesitate at the start, try to make it across the open
area and to the
tunnel to the left while the big ugly beast is fighting with the
marines.   They
should all ignore you while they're trying to kill one another.
It'll be harder to
make it by without damage once the monster smacks the marines.
2) Continue down the tunnels until you come upon red doors and a
wheel.
Use the wheel to open the doors (hold use down until they open
enough to
go through) and ten climb up the tunnel to the top.
3) Go across the open area and up to the other side, then go
left towards the
power generator (follow the signs).  Once you get to the
elevator, send it
down (without you on it) by using the button.  Then you can
shoot the trip
mines below, or better yet send down a detpack on the elevator
and set it off
from the safety of above.  Bring the elevator back up (use the
button), climb
aboard and go down with it this time.
4) Take the stairs down and continue all the way to the bottom.
Watch out
for the freaky leech-worms in the water -- they don't do much
damage,
especially if you have some HEV suit power remaining, but they
gross me
out bigtime (the crowbar works on them nicely).  Once you make
it to the
(non-operational) power generator, use your crowbar to smash the
boxes
that are blocking the pistons (on the front of the generator).
5) Climb back up the stairs and go to the fan control panels.
One fan is not
on, so you have to turn it on with the switch there.  Now the
power generator
is on, so you can head back up to the elevator and then to where
that lovely
monster is waiting for you.  Note that the track main power
still has to be
activated for you to use the train in the center of the open
area (by the
monster).
6) Find the the boarded up doorway labeled  "Track Control".
Ignore the
switch for now, just jump out the window and let the monster
follow you.  Go
down the large tunnel on the left (the one that isn't obviously
a dead end) all
the way to the far wall of the room at the end.  Pull the switch
there and when
the monster walks between the two huge electrodes, he'll fry
like an egg.
7) Exit the room through the door, which will lead back around
to the tunnel
you took to get there.  Go back to the large open area with the
train car and
jump on -- you now have power.  Drive the train straight (full
speed is fine)
until it stops at the rotating platform on the track.  Go back
into the track
control room and use the switch there.  The rotating platform
will spin,
pointing the train car in the direction you want to go, then hop
out the
window, back onto the train car, and smash through the barrier
at full speed.
On A Rail
1) Once your train car stops at the guard, listen to his story
and get off the
car to use the switch on the wall.  The gate will raise, and you
can continue
driving the2 train along.  Avoid the water and the center track
of the rails --
they will damage you (to the tune of about 10 points per
touch).
2) Continue driving the train straight ahead until you see the
second track
switch sign.  Shoot the sign to change the way the arrow points
(you want to
go straight instead of turning), and your train car will switch
tracks at that
point.
3) Stop your train car at the platform by the stairs and the
monster.  Take out
the monster and climb the stairs, but don't smash the crates --
there's a
sentry gun behind them.  Instead, toss a grenade to the other
side of the
crates and take out the gun with no hassle.  Then enter the
little room and
use the switch to move the hanging hook that was blocking the
train tracks.
4) At the next track switch sign, shoot it to change tracks.
That should take
you down the track where the hanging hook was blocking before
you moved
it.  Once you make it to the next gate, get off the train and
use the switch to
raise it, then continue riding the train down the track.
5) When the train car stops at the end, you have to get off and
go it on foot.
Shoot the marines on the left and keep moving.  Smash open the
boarded-up room to find the friendly guard and get him to join
you (use him).
6) Be careful turning the next corner -- there is a feisty
mounted artillery gun
in a bunker straight ahead that will perforate you if you stand
there long.   It
can also shoot and destroy crates, so once it knows you're
there, run like
crazy up to the right side of it's bunker.  There's just enough
space there
between the wall and the bunker to toss in a grenade or two and
take out the
gun.
7) If you're hurting at this point, climb up atop the blast
doors and get the
health and HEV power cells before entering the blast doors.
Once inside,
shoot or toss a grenade at the trip mines and stand clear.
8) Walk down the stairs to find another train car and take it
for a spin.  Watch
out for falling debris (that can knock you off your train and
onto the electrified
rail as your car runs off without you) and red sentry gun
lasers.  Duck under
them to avoid unnecessary firefights with sentry guns.
9) Also watch out for the marine with the rocket launcher around
one of the
bends in the track.  It's best to disembark to take him on, as
he aims for the
train car pretty darn well.  Continue along the track.  If you
lost your train
when fighting the rocket launcher, you'll find it up ahead soon
(it stops at the
next gate).
10) On the platform by the train track kill a few aliens and
then hop up over
the green boxes blocking the doorway.  You have to duck at the
peak of your
jump to do this (see the Hazard Course for details if you
haven't already).
Once inside, use the switch to raise the gate on the track and
continue down
the track on the train car.
11) Continue to the next gate, and then kill everything in the
room. To kill the
mounted gun, toss a grenade into the bunker with it.  The switch
for the next
gate is near that bunker.  Feel free to take off on foot at any
time -- the train
is not critical to completion, but it does save a little walking
time.  The train
car also comes in handy for clearing out trip mines -- you can
just let it go on
it's own and catch up with it later (it will stop at gates).
12) The train car also makes a pretty good shield against
incoming rockets,
which you will run into at least a few times in the tunnels.
Duck behind the
control panel and speed by to avoid them, there is no benefit in
taking the
time to destroy them.
13) At the next track switch sign, shoot it so that you continue
going
straight.   At the next gate, get off and take the ladder down,
but be careful
not to cross the red sentry gun laser -- near the bottom of the
ladder jump
away from the wall and strafe to the side at the same time to
avoid it.
14)