Pretty noice NGL. The jump can be modified a bit for more smoothness but overall nice product. There can be a lot of Metroidvania elements in this game and can serve as a good time-killer on mobile devices. Also a dumb question but did you use this palette for the game.
Ah yes, coincidently my game has a similar 1-bit aesthetic with mostly the same colors just edited a bit.
My game if your wondering:- https://natu007.itch.io/ludum-dare-47