Many cool ideas in here, the abilities and animations all feel very polished. Shame that you got ditched. I will say I found a few things to criticize, though most of them would probably be fixed by having a more properly developed version of the game.
The hammer causes a lot, a LOT, of lag, dunno if that's exactly on my end or the game's but it makes the hammer kinda wonky to use.
Secondly, the invincibility ability lasts a bit too long for most of the areas that need it, and I think a good improvement would to either let you cancel it or use the other abilities in conjunction with it.
The other problems I noticed were that there were a good few areas that lacked proper collision, which actually led me to a softlock in the blue level with that one yellow npc in the numbered rooms.
Other than that, while it kinda falls short of actually being a metroidvania, it shows a lot of potential, so if you wanna turn this into a fully fledged game in the future, go for it!