I really like the aesthetic of this game! The handdrawn sprites mixed with a 3D environment looks great! The platforming/level design was good too but on the second part of the game it became incredibly difficult because the player is unable to look up or down. Because you spend the second part of the game descending for the most part, it's hard to judge where/what I'm going to land on. Adding a shadow for the player would help too in terms of showing where they're going to land. More information on the jetpack would help a lot too, on the first part of the game I was never certain how much fuel I had and on the second I was never sure when I would get boosted by the jetpack. Giving an indicator for how much fuel you have and when you're going to get boosted would make this feel more precision based than guesswork. Overall, I really enjoyed this game, aesthetically it's great and I think with what I suggested the gameplay could be even better!