Great game idea - loved it! The style was really well done too...
A couple of minor things I'd suggest.. The character could do with some movement, he's just in t-pose obviously - I'm guessing perhaps you just ran out of time for that... Secondly, sometimes the gameplay is a bit, well - messy. I think it might have been better with simpler levels with fewer objects, especially at the start and perhaps a grid to line things up with.
These aren't major things though, I really enjoyed the game and the level design was top notch! Great job...