This is a nice one for sure! I am quite surprised that you interpreted the theme to be a stealth game, and I'd say that makes me happy. Not every game should be a gamble game, you know. Anyway, for a 2D horizontal stealth game, this is not bad at all, with all of the stealth game staples such as cupboard and stone, there is also the double jump too! The gameplay feels much dynamic than your typical hide and move type games. Well done! I would really want to finish your game, but got softlocked on a room I've accidentally backtracked, and was locked in a perpetual "You've been detected" page :( Sad.
So from a limited playthrough, I think the main criticism I can think of is that the wall climb is a but hard to pull off, and some jumps are pretty precise given how the controls currently are. But other than that, this is quite a nice entry! Good job and keep up the good work!