((Okay, see, now it is even? You've got a demon-king, and I have endless hordes of Orks. Just a note, though, they have red blood, due to their anatomy containing both animal and fungi genes.))
"Oi, boyz, bring up da Kanz!"
At Trogskull's order, dozens of what appeared to be tin cans with arms and legs lumbered into sight, each piloted by a Gretchin, a slave subspecies of Ork. The saws on their arms whirred to life, and the Gretchins inside cackled with an insane bloodlusting frenzy as their machines hacked a swathe through the demons, opening a pathway to Ocade himself. Trogskull took the opportunity, and lunged towards him, hoping for a 'gud brawl' as he might have said.
Meanwhile, the Dark Angels ventured outside the fort once more, to search for the supposed Ultramarine Luke. However, during their search they stumbled across the demon warriors battling the Orks.
"So the xeno and heretic have met," Atlas shouted. "then the Unforgiven shall cleanse this realm of them both!"
The Dark Angels squad charged forth, save for Uther and another in the back, who fired into the melee with a missile launcher and a heavy bolter, respectively. Atlas was the first to reach the melee, bludgeoning an Ork to death with his Power Fist, before noticing the Ork's warboss charging towards what appeared to be the leader of these chaotic entities. He decided to put the demon in a worse position, and attack at the same moment.
((Both the Orks and Marines are controlled by me, but they are by no means on the same side; so don't worry about that.))