Khorne, the god of war in Warhammer 40K, currently wields the most influence in the chaos pantheon. Tzeentch ... defeating an invading force of Death Guard with Commander Shadowsun.

Tzeentch is your spellcaster (and Fatshark ... the more reactive missions currently in the game. As for the enemies, Guardsmen are the perfect cannon fodder. A unique, and even weaker, planetary ...