On the 7th level in the game, there is a minefield. Well, start by going
through the small shack and taking out the two snipers. The sniper perch
that is closer to you is the one you can go inside! You should have took
out the guard on the ledge, now another guard will come out onto the
ledge, take him out. There is a part where the railing is missing. There
is a container you can jump in almost directly under the strobe light.
Jump in it. Then, jump on the wall of the container closest to the
shack. Then, jump to the rail. You should catch the floor of the shack
instead of the rail. Move right until you reach the area where the rail
is missing. Climb up go inside and you will see the biggest
weapons/gadgets area in the game!!!