Not sure how detailed the mesh is- can you use magnets to crumple the roof and door of Hell's Hauler where the manitous are? As for the poses- xantor's right; they should be focusing on their target, not the camera. Also- I'd imagine a monster would punch through a door to rip it off, rather than daintily holding it at the top. And definately use some motion blur.

That's why "the devil's in the details"- there's just so many you have to think about...