Since there was no tutorial I didn't know there was a double jump or an attack when first playing the game so I ended up accidentally beating the game while doing a minimalist run. That's actually quite the glowing endorsement of this game though, the fact that even without a tutorial I was still able to do everything shows a lot of accessibility in terms of design. I also think it's a really cool concept to have every level have roughly the same layout with the changes being the enemy positioning, creates a very cool dynamic where you have to approach the same room but in different ways each time.
Good stuff!