I really like the two-button control scheme for this: it feels as though the character can do everything you'd expect, but with just those two buttons. It's very intuitive. I'm less keen on the graphics: that font on that background is virtually impossible to read. (I also notice that the text at the beginning seems to slip off the bottom of the screen, which I found happening in my game as well to an extent - it seems as though it might be a common GDevelop issue so if you ever work out what's going on there I'd be keen to hear about it!) The sound does the job and there's certainly some innovation here. My one other quibble is that I'm pretty sure I got a game over when an enemy spawned inside the player character, but it's fun all the same: it's hard to fault a jam game over something little like that.