The Typhon tyranid NPOs plus some homebrew ones to add to them. Added enemies : Genestealers, Neurogaunts, Neuroloids. (I know neuroloids are just tokens in 40k, but I wanted to use mine in killteam)
I mainly wanted more variety for small enemies, and to use all small units from Leviathan.

Strike Force Variel, but with more Astartes stuff to give them more and put them at a limilar level to Angels of Death.