Quite nice art especially on the capsule, and the music was well chosen. I think some extra sound effects and object in the scenery would make it feel a lot more polished and interesting.
The UI around the player looks cool, but was simultaneously a bit distracting - I don't think there is any real reason it has to be right ontop of the player, nor did pressing tab seem to show me anythind I'd really need to know. Not sure what the weight mechanic would have done, I have always been prompted to return to the exit before it filled up.
I got gameover in level 3, and I'm not sure what caused it.