This toolkit for Painkiller allows you to make your custom levels and mods for the game. Based on v1.35 game code.
The Editor includes - map-making and rolling up mods:
o Users must have 1.35 to use these tools
o Easy to use tools and documentation to get people started
o Supports both current versions of Maya (plug-ins for 4.5, 5, and 6) and 3D Studio MAX (command line)
o Ability to edit almost the entire game including maps, feature artwork, major engine variables, and scripts