That game was really cool! Took me a minute to realize how to get through the blue doors (I had assumed I had to trigger something to open them... whoops). I wish gravity was a little less intense. It seemed like the gravity difference between when you're jumping/jetpacking and just falling off a platform is way different.
Art was simple, yet solid. There were some cool little animations on the enemies that had a good feel to them. You crammed lots of little juicy elements in there. A really cool game!