Very nice mini-metroidvania. Taking away the powers after the tutorial is a good idea as it really makes the player miss being able to move around so easily so gives you a nice reward once you find them again.
The game feels good to control and the checkpoint system in this is done very well. I died a few times but never got sent back too far.
I also appreciated the keybindings - I had a bug where climbing using the W key didn't work (had to tap multiple times to climb) but I remapped the controls to a controller and it worked fine.