Attention!!! You need to issue a warning about the possibility of an epileptic seizure!
The screen blinks so often that this can happen!
Your game lacks the separation of key display and key read cycles. In order for me to be counted as pressing a key, I need to hold it down. It is not comfortable. Especially considering that sometimes you have to jump and then move.
Overall, the project is good. I especially liked your idea for the game. The project matches the theme of the game jam. I liked your game!