Very nice game, especially before you get to the dungeon where it is needed to make many consecutive jumps upwards - the ceiling is too low and the beast collides with it, loses velocity and results in jump downwards. 

The jumping already feeling good, and the level design is looking nice. Sometimes the player character randomly teleports back to the start with a light red tint in its sprite, it made a little frustrating to try to discover the map. But i think in the future it can be a really good game :D

if you have a little spare time give a look to my game too :)

Looks like an awesome start! I started my game in Metroidvania month 17!  You should go for the switching forms you mentioned on the game page, sounds like a cool mechanic and also it sounds unique.  Keep it up~  Please check out my metroidvania game when you can :D

Nice platformer. I like the level design. Combat felt a bit weird, you should add some feedback when hitting / being hit by enemies. I wasn't sure whether I was actually doing damage. Also the range of the player attack could be a bit higher.