Note: The following codes are only available after installing the patch that gives the game a save game feature. Load the game with the "avp.exe -debug" command line. Then while playing as the indicated character, press ~ and enter one of the following codes to activate the corresponding cheat function:
Load species
Start the game with the "avp.exe -debug -l[ampcxtr]" command line, where a is the alien, m is the marine, p is the predator, c is the civilian, x is the xenoborg, t is the praetorian alien, and r is the predator-alien. Note: All letters are case-sensitive.