Press ~ (tilde) during gameplay to call up in in-game console. Then simply type the desired effect;vivalahelvig - God mode (toggle)
bighugmug - Full weapons and ammo
cameraX - Change camera view (replace X with 1, 2 or 3)
heehoo - No clip mode/Fly mode (toggle)
Ok, This cheat is weird, because it gets you nowhere, and you have no Det Placks so its just for decoration until you get the baton thing, All you have to do is when you finish training, take out the det packs and place one on the elevator just as the screen starts to fade. When that Woman says, "Return to barracks" or whatev, you appear and you have the detonator thing and you have no bombs, =) its useless!
Type in "kill" to deal damage to yourself.