Really cool metroid-vania game! I like the style and the take on the theme!
You can Jump with the up arrow but you can't double jump with it unless the first jump was done with the "Z" key which is a bit confusing. Also the arrows and on-screen instructions feels like the game was being played for me at times. Also if you dash into certain obstacles the you get stuck
But it's super impressive how much content was in the game with only 3 hours! Good job!
was this game inspired by Electronic Super Joy?