The jump almost requires you to run first, or hold the button down as long as possible, so I can see why you had a problem there. I had the jump a little stronger before, but the lack of head room made it harder to land some jumps so I reduced it. Unfortunately, I also didn't notice the bug with the health because I always stopped the game completely when testing, but I'll definitely fix that once the jam's voting period is over. Thank you for playing and for the kind response!