Easy Way Through Electric Fence On 2nd Level:
When you are in the room with the guys in the towers shooting at you kill them and then go to the room with the rock crusher tank and drive it into the next room where there should be a electric forcefield type wall and just drive the tank through it.

BMF Location:
In Deathmatch: Lobby...Go upstairs and grab the rocket launcher, now go to the wall facing the lobby (youre still upstairs) start blowing up the wall and make a hole to the roof where there is one of those BMF's at the top!

Goodies:
In Deathmatch: Lobby you can get the rail driver, flamethrower and fusion rocket launcher by blowing up all of the posters in the main lobby area. Happy apocalypse!

Secret Rooms:
In the lobby, as you go up any ramp, blow a hole in the wall with a rocket launcher wherever there is writing on the wall. There will be a secret room in each writing spot. there are two flamethrowers, a rail driver, and a fusion rocket launcher. Also: The lobby multiplayer level, you can reach the third level of the lobby (the roof) by blasting through the wall of the ramp. There is a railgun and fusion rocket launcher up there. You will know if it is the right side of the roof if you can see arches on the other side of the wall.

Hidden Pit:
In the Deathmatch: Installation XJ5, you can get outside to the pit! here is what you do Grab the rocket launcher and jump down turn left...see the archway above? Blast a hole in the wall below the doorway and start building a tunnel straight to the open window. One might ask why do all this work when you can just go to the archway above and start blasting around the window? Well it doesn't work for some reason...there is like an invisible wall which wont let you pass Once you make the tunnel all the way through, you can look down into the pit below If you drop down, you will always die! Turn to the left or right and blast a hole big enough to jump into (you make the hole on the outside of the wall). Jump into the hole and then make another hole straight in front of you but down a little ways. Now that you have made another hole, jump into it. Make sure the hole isn't to far down or you will die from the fall. Repeat this process until you have reached the bottom of the pit. I must remind you that it is next to impossible to get back up once youre down there.

Kill Bots Easily:
(Deathmatch) Any round that has a bridge, launch a few rockets at the floor to make a several...