It is difficult, not too bad in most places but there were a few times that it seemed needlessly so. Level 2 the player had to repeat a few sections to pick up keys, and that didn't seem to add to the level. After dying on a section lots I didn't enjoy going back to it again even more just to get a key. Level 3 was too difficult. I could not reach the second checkpoint after 50 deaths on normal. Tried easy for a while, but still couldn't make it.
Mechanically sound game, which makes the difficulty more bearable. Platforming felt accurate and responsive. It would benefit from more levels, slowly ramping up the difficulty.
Thank you very much for the time you spent and your comments!
Yes, I understand that until getting a little practice can be quite difficult.
I was only able to dedicate a week to the game to present it at the Jam, but I am already making easier levels to smooth out the difficulty.
I'll let you know when the update is here!