I absolutely loved this game! Maybe my favorite game I've played from all of LD32. Amazing music, great platforming, fantastic art, an intelligent camera and a well-made Metroidvania setup.
The only problems are ones that all Metroidvania games face -- what begins with a sense of exploration can turn into tedious backtracking or a lack of any idea of where to go or what to do next. With that in mind, I think it would be best to help the player whenever possible, for instance:
- A map that automatically gets marked appropriately when players discover an area, when they discover that an area contains some interactive element or item, and when they have fully used that interactive element or gotten that item.
- Clearer indication of which key will open which doors, and also which doors the player currently can or cannot open.
- When a new ability is gained, have the player be immediately required to use it in order to figure out its potential.
I think there is lots of potential here if you keep working on this beyond the post-jam version, but what you did in 72 hours is already stunning. Awesome job!!