TimeSplitters: Future Perfect Cheats

On the 'Khallos Express' level you will come into Khallos's own personal cart which contains a slide show showing various different Story Boards from the game.

In the 1994 laboratory, after the mansion, you will reach an area with a scientist and a zombie trapped in separate cells. If you activated the computers next to either one, and wiggle the joystick, a program will appear on the computer. Select the white boxes for things to be included in the experiment, and chose degree of variation. Then hit the "Run program" button, and watch as the people in the cages undergo changes!