Heh, actually that's exactly the goal of this paintjob: Dirt, battleworn, and bloody.
You described exactly what the goal of it was.
Still, it definitely is too dirty. It's going to change a lot, too.
Okay, after following Winter's suggestions on IRC:
I also figured out how to bake an ambient occlusion map onto these things
I should note that UV unwrapping this thing was a real pain. About 37% of the texture space is wasted, reducing the resolution of what you do see. I also don't know how to make seams be seamless.