Enemies are okay and the level design presents interesting jumping puzzles. But that gravity is a bit too much for my taste. You fall a bit too fast.
Also the camera is a bit annoying, which makes me put down the game after a while (I'm pretty sure I have the same issues with my own game) Try to make the camera smoother or more stable.
I also recommend adding more animations that tell you what's going on, like you did for the main character when you look down. It's simple and works really nicely, keep doing more of it!
It seems the core mechanics are in place and work well, keep tweaking it into perfection!