Half-Life: Opposing Force Cheats

Use the following map names with the "/map [map name]" code:
Boot Camp

Type in sv_cheats 1 at the console.
Then walk around until it loads.
When it doe's, go to the console and type in:
impulse 101 All weapons
god Makes you invincable
noclip go through walls that you can't go through
notarget Enemies can,t attack you
impulse 76 You can creat some army soldiers with this. Some
Thing will show up when you put in the code. Save it first before you use the code. When the words come up, you should be at the Opposing Force menu.
Go load your game again and then put impulse 76 code in your console. They will look like and army soldiers from Half Life Game of The Year game. They will attack you.
Just put in the code notarget after you put the code impulse 76 in. They will help you do your alien hunting.

After getting the Displacer on Xen, use the secondary
fire before you go through the portal to Earth. You will be warped
to the Crouch-Jump section of the Hazard Course, where one Vortigaunt
will attack the holographic instructor. On the other side of the
room is a second Vortigaunt and a shotgun. The portal exit is
in a corner of the observation room.

of0a0
of1a1
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of1a5
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of2a1
of2a1b
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of2a5
of2a5b
of3a1
of3a1b
of3a2
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of3a5
of3a6
of4a1
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of6a1
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0f6a5
of7a0

All you have to do is start OpFor with the cheats on, start a new game or boot camp, and type "map c0a0" to start from the train, "map c1a0" to skip the train intro, or "map t0a0" for the hazard course. Now, just type "impulse 101" to get all the weapons including those from OpFor!!!!!

*WARNING- This can be slightly glitchy since the original HL wasn't made for the OpFor weapons