This glitch does not work with Robofish in TimeSplitters 1. In Compound, there is a staircase in the building where you can climb into a glitch. If you have a small character (tested with Monkey), you can climb the stairs in the largest building and go left just before the stairs reaches the ceiling of the bottom floor. You will find yourself in the same room as normal but it is invisible. To other players, you will appear invisible, only appearing sometimes. Bots should never kill you, however players can when you are visible.