The whole problem is the broken jumping mechanic. When I jump anywhere, my movement pattern randomly switches from walking to some kind of gliding motion, like a character moving across water. In this state, the jump button is disabled, and I can no longer progress through the level. On level 3, this happens right from the start, and I can't get over small ledges to get into the elevator. I was lucky once and was able to move normally at the beginning of the level, but then I jumped somewhere else and got stuck, unable to jump to move forward.
I don't know why this bug happens. No one else here seems to have complained about anything similar, so maybe it's just me. It's a shame, because I really like everything else in your game :С