So, I couldn't figure out what to do pretty soon after starting. The jumps seem really tight, and every time I died, I had to restart all the way at the beginning, so to save myself the frustration I stopped there. Here's some feedback of what I was able to play.
1. The camera takes a little too long to start following the player, you generally want the player to see where they are going, so making the camera lead ahead of the player is generally better.
2. Easier jumps please. I don't know if I'm just bad at this platformer in particular, but I felt like there wasn't anywhere I could go. I see in the description you eventually unlock a dash and flight, which sound neat, but I think the player needs a base kit tool to help with making these jumps. Maybe the dash could be a starting ability and then a double jump, and then flight? Either that, or checkpoints so the player can retry the same tricky jumps over and over without the tedium of getting back.
3. Security death blanket. I managed to fall between the red squares near the start and fell forever. There should be either a check in the code to make sure the player doesn't fall too low, or a giant death barrier pretty far down to prevent this issue.
This was all I was able to see, so I apologize for the probably shallow critique here. I hope you continue to make games and just focus a bit more on onboarding the player before throwing them to the wolves!