To enable Apocalyptica cheats press [~] during the game to open the console and type "exodus 15:3" (without the quotes). Then you can use the following cheat codes:

god 1 - God mode (0 to turn it off)
fly 1 - Fly mode (0 to turn it off)
nextlevel - Skip current level
changecharacter - Change current playing character
botcombat - Toggle botcombat
botmove - Toggle botmovement
botforcefight - Toggle bots forced fights
listplayers - List all active level players
addbot - Add a new bot based on a script
editbot - Edit bot traits of given ID
removebot - Remove the given bot from play
makebotdead - Kill the given bot
playmovie - Play given movie
botorders - View current bot orders
getres - Get current resolution
setres - Set current resolution
list - Many more commands