I really enjoyed playing this. It gets quite difficult quite fast. The art-style and music just rock! What a unique setting :)
One thing I think would've made it a bit nicer to play was if you could use your keys to do the inputs. I think binding the keys you plan to use early on still complies with the theme and the original idea. Not a biggie though!
The puzzles are really well thought out.
Congrats on an awesome game!