I reached the top and I expected some kind of epic bossfight but this is a game jam so obviously there's no time for working on one. Any kind of closure would have been nice though, unless there was a bug
Overall nice game with good atmosphere between all parts of the game. I just tried to pass through the enemies at first then realized I could gain levels. My character probably went a little too powerful an the game became maybe a little too easy.
I would have added just a small time freeze with some kind of animation before displaying the level options. I often clicked one randomly because it appeared while I wash mashing my mouse to beat an enemy.
This could expand easily by diversifying the gameplay.