I really enjoyed this one! I loved the charm that the game had to offer, and the gameplay was just as enjoyable too.
At first, I thought that jumping was a bit too harsh because of the gravity, but then I realized that it was probably intentional to motivate the player to use the rocket more often. I ended up dying on my first playthrough, but I really wanted to beat the game, so I gave it another shot and got all gems and keys.
Amazing work!