Just an improvement to the chaos marines to make them the threat they should be as well as more interesting and exiting in game by giving them order and equipment cards. I used dice so nothing new is needed but printing new cards would be better. The standard rules and point values could be used for 'mind slave' marines if you're using tyranids.
Chaos Marines Order and equipment cards work in the same way as the loyalist marines, they don't affect other types of aliens.
Bolter: Roll a red dice: 0 = Targeter, 1-3 = Bolt Pistol. Marines (including loyalist marines) with a Bolter are now worth 6 points.
Heavy Weapon: Roll a red dice: 0 = Targeter, 1-3 = Suspensor. Marines (including loyalist marines) with a heavy weapon are now worth 12 points.
Commander: Six life points. Roll a red dice: 0 = (Roll a second red dice; 0 = Force Field/1-3 = Medi-Kit), 1 = Bionic Arm, 2 = Bionic Eye, 3 = Digital Weapons, then roll a red dice for your Order: 0 = (Roll a second red dice; 0 = Move It/1-3 = Fire), 1-3 = (Roll a second red dice; 0 = (Roll a third red dice; 0 = Close Assault/1-3 = Photon Grenades), 1-3 = (Roll a third red dice; 0 = By Sections/1-3 = Heavy Weapon)). Commanders (including loyalist commanders) are now worth 20 points.