Glad to hear you enjoyed it!
Anyways, I think the hitboxes feeling unfair was unintended consequence, and I'm sorry to hear that. Despite the fact the game is named "Unfair Elevator" the unfair part was supposed to be some attacks like the boxing glove coming out quick or finding a safe spot to go. I actually tried to design most of the hitboxes as fair as possible by keeping everything a bit smaller than it looks, kind of like games like Celeste and Geometry Dash, but I guess I could have benefitted from asking people how it felt to play and getting playtesters, since I only ended up showing it to friends after it was already released :P
All that yap is to say: which attacks did you feel like the hitbox was too big for? I would greatly appreciate any further feedback as well so I don't make the same mistakes in future games :)