Thanks for the detailed feedback and trying out my game, it really helps me for the next game I make. Unfortunately I ran out of time at the end. So you have to go by the pictures for the upgrades and I also reused the death animation for the end of the floor. And you're right, one of the biggest mistakes is probably that there are no instructions or better indicators of what to do, and you only have the Itch.io site to go by, which is also because I didn't manage my time properly.