Visuals
1 ... aesthetics fits together
2 ... almost no motion (except IDLE character animation and little pickup movement)
3 ... transition to next level -> very good
4 ... I would love to see a little more detail for parallax BG
Controls
1 ... works
1.1 . movement physics feels like you are on Moon (flying)
Sound
1 ... is there no sound?
Bugs
1 ... player is able to go out of the map & you get stuck -> forced to restart gam