Great, i completed it.
If i may provide a little game design advice: the last level is probably the easiest and fun one, and has no enemies, right? So maybe you can make it (or something similar) the first level? Because right now, the player is thrown in the level with new movement rules, different(!) enemies and collectables, right at the start, in the first 10 seconds of the game. So more gradual introduction of enemies/mechanics can be more player-friendly, i think :)
Overall it was good, thanks!