PlayStation 2 :: Kill Switch Cheat Codes
Level select
Successfully complete the game on the normal or hard difficulty setting to unlock an option that will allow you to pick any level in the game.
Grenades
When on any level and there are two enemies talking to each other, throw a grenade (for example at the beginning of the Think Like A Gun level). They will not even look to see what it was because they will be distracted.
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on the second part of the first levle there is a toret blocking the hallway so u can try to kill the person maning the toret by shoting them in the head but you can walk outside on the edge