All the writing on the wall is pink. Either A) Somepony mashed up either theirs or somepony's mane to write it or B) Ponies have pink blood. I'm going with A seeing as of how there's blood on the ground, on the armor... on their face.
Aha! Deadspace! Only things missing are the characteristic blue lights in the helmet, but I guess it would get pretty hard to put those ears/horn in a helmet like that. I bet THAT can deliver quite the stomp attack... xD (ps: stomp attack works for EVERYTHING!)