Had some trouble figuring out the mechanics at first, but once I learned the ropes the game became very enjoyable, especially with the progression. Speaking of which, I would love to see a checkpoint upgrade that starts you off on the first platform so there's less repetition.
This game has potential to become a good platformer :D
Edit: finished the game! I don't know what is the intended method of passing the horizontal trap enclosure at the end, but what I did was spawn a Z from the platform below and wait for it to float up so there's something to land on halfway. Perhaps there could be more interesting interactions if this concept is developed further.