It's cool, but extremely hard to make out. I'd say right off the bat, stick to one outline color...and maybe outline more of the arms and head to make it more defined. Also, the dithering on the wall and the light source in the sky could use some work...they don't seem to be helping that much at the moment.
I would say that the second frame is working against you... instead of having him be in the exact pose as the first frame, maybe make the arms be at a 45 degree angle, between the pose of the first and last frame... The definition from the first frame is definitely not carried over to the second frame, and depending on what your going for, it may be alright for the second frame to be this way, but it'd definitely be in your best interest to re-shade and re-outline the gorilla in the last frame.
This is pretty snazzy (though seizure inducing at the moment), and I think with a little work, will be tolerable to even the toughest critiques.
