Thanks for your feedback! We couldn't fully implement all the ideas we had in mind. We originally planned to create a game where both the enemies and the player would evolve as the game progressed, which is why we introduced an experience system. Unfortunately, due to time constraints, we weren't able to add all the features we envisioned.
We're sorry about the bug where excessive speed caused the player to glitch out of the map. The speed boost has caused a couple of other bugs as well, and we appreciate you bringing this to our attention. Thank you for sharing your thoughts!