Playable races are:
Necrons
Tau
Eldar
Space Marines
Chaos Space Marines
Imperial Guard
Orkz
I can't wait till I ask for it to be approved!
For necrons you can be a flayed one, wraith, or a necron warrior. Only since they have no commandos, and every other army you play as a commando. I will play as the tyranids, sorry, but I will. The tyranids are the enemy, so will be played by the RPG god. Me.
Kativa and I will make it once his Transformers Descretion: Outbreak RPG dies.