Pretty neat look, very grim in a way. Can't speak on the sound, can't hear it. Love the backstory....
Controls are loose, but in a way that works really well IMO. The upgrade orbs aren't honestly a whole lot of fun, and the mutant mode seems sort of....useless. Perhaps that is my fault as I didn't play as long as you may have liked and therefor didn't get to discover the true use of the mutant ability, or if there were more. and on occasion, I felt as though the game was forcing me here or there.
anyway...out of 10...
gfx - 9.5
sfx - N/A
design - 7
gameplay - 7.5