My biggest gripe about this game is the lack of health drops. While I get that while each heart is precious, there are some sections that get AWFUL softlock-y if you aren't PERFECT in your platforming, ESPECIALLY while backtracking. (I kept getting map drops, Dying, going a different way, then circumventing the area the map was showing, leading to the frustrating malady where-in I had probably explored everywhere, but had no map progress to show for it, so I couldn't be sure.) Also, After the first boss, I encountered a glitch where I ended up in the last area, and this glitch persisted over several lives before it corrected itself.