This game is also available on PC.
Hit the tilde (~) key to open the console window during the game, and type the following codes to enable the corresponding cheats:
god 1 -- god mode
infammo -- infinite ammunition
giveall -- all items
invisible 1 -- invisibility
Then when in the game press "~" and half the screen will be covered by a grey area. the type in these codes:
god 1 - god mode
invisible 1 - invisibility
giveall - everything
infammo - infinite ammo