That was genuinely super cool. There have been plenty of games that take a genre and invert it, but I haven't played one yet where you start normally (albeit with some morality questions!) and then have the inversion part way through. That was a clever technique, and I felt way more invested because of it.
The gameplay was quite difficult for me, but I got there in the end. I found the knockback on taking damage meant I fell down some levels which would sort of snowball me. I also found the players hitbox quite large so I would often hit my head and therefore miss my jump. And maybe it was just me, but I realised I never made use of the melee attack. The game was nice and responsive though and well balanced (I only fully died twice after all!), and I was genuinely immersed during the end fight. Both emotionally and gameplay wise, that was awesome.
Great art (I especially loved the boss and its animations), thematically on point, and really fun. Awesome stuff