Heads For Bullets

PLay arcade with mummies as enemies. Get a gun (snipers work real well) and aim for the mummy's head. Shoot it when another enemy walkin the room. The mummy's head will fly off and bounce around the room and it might hit your other enemy. If it does hit your other enemy it will cause damage to your other enemy (it will die if the mummy's head hit ur other enemy's head)

Help In Challenge 9C

Equip yourself into the turret gun on Challenge 9C, by pressing X. This will help you defend your crystals much easier.

Unlocks In Challenges 9A-c

Challenge 9A unlocks: Arcade Bot Set, TimeSplitters. Challenge 9B unlocks: Timesplitter 2, Challenge 9C unlocks: TimeSplitter 1

Challenges 4A And 6A

Challenges 4A and 6A do not unlock anything.

Challenge 6C Bonus

Challenge 6C gives Veiled SWAT and Arcade Bots: Veiled SWAT and Gasmask SWAT.

Challenge 6B Bonus

Challenges 6B gives Gasmask SWAT.

Map Maker Glitch

First go to arcade. Then go to where it says map maker. After you get the screen where you can design your own map,select where it says tiles. When you get on the opening screen there is a big list of the tiles you can choose from. First go to the second page (press o) there will be a really big room that stands out. Pick that 1 and then and put it on your map. Build any thing else you want around it. After it is built and saved put the setting on industrial. Dont put any bots on just so you can find the secret easier without dying. Once your in the level that you built go to where the big room is. Go diretly to where you are facing the rocket perfectly looking straight at it. 2 the top right is the sniper post if that helps.Take a left and walk all the way down to where the wall ends (there is a ramp 2 the right which leads to the sniper post DONT GO UP THAT 1). once you hit the wall look to the left and you will see the ramp. Go up it and make sure you dont fall off. Go to where you see a beam walk slowly across the beam until u reach the wall (duck if needed to see if you are going to fall off or not).Once you reach the end of the beam lightly go to the left and you should fall outside of the level you have built. You can now see only in the big room even though you are not in it. When you out there you are able to shoot in at everyone but they cant shoot you because they cant see you. Good way to trick your friends in arcade mode.

Powerful Shot

For a more powerful shot press R1 instead of R2 if you have the rocket launcher it will shoot 3 rockets at once. for the scifi auto rifle it will shoot Grenades.