Hey guys, I added the UDK shader and UPK for the mud shader that is in the first post, and the blend material to make it go to puddle-mode! Download here!
Looks nice, one thing I don't like is the way everything is brown in the last screenshots, it blends together to much, and gives no contrast or interests in the textures.
I assume the grates decal is just an alpha blended/sorted plane? Looks great. And that reflection is awesome too, you're using a cubemap or is it something fancier?
You could hide the seams - maybe there's a collar and the blending between head and torso isn't visible, or backpack straps on shoulders where arms meet the torso.
Try to bring out the edges more. Cavity map should've done the trick, just try duplicating while the cavitymap is on the softlight or overlay blending mode.
Head close-up, still a bit of touch up to be required to blend the square scales with the circular ones but I'm pretty happy with the direction so far!