You have a pretty decent base for a platformer here. Maybe a bit linear for a metroidvania but it has almost a Jill of the Jungle esque map going on and there are ideas you could use to make something more open-ended and I appreciated the effort towards making different area types stand out. At the same time, there's room for improvement on programming--jumps are a bit janky here and there and in one area one can even be practically thrown into an enemy. This could be a basis for something cool with a bit more TLC.