Was a very interesting idea, and I liked the low-key intro sequence. I was unable to progress though as I kept getting stuck, and it seemed like the "W" key was doing a weird thing I didn't understand.

Nice idea.  I like the push off.  The arms seem to function a bit like a jetpack... but only some of the time?  Gets a little monotonous after 5 minutes but with more time for level design, etc, it'd likely be good.  Btw I'm impressed by the music -- oddly that didn't get annoying!?!?  Good job :)