Very cool! I really like the "echo" mechanic, I wish it was used more later in the game. I was impressed how many upgrades you managed to fit into such a short game, and some of them are pretty creative too, the "burning nearby objects" one is a type of key I haven't seen before, and it really made me rethink how the level was structured. Overall good level design, I never felt lost for too long. My main criticism is that the movement doesn't feel great. You gain height really fast when falling, but you fall really slow, which I found a bit jarring. Still, I had a fun time, and the final boss was a good challenge. Nice work!