All around a pretty neat idea! I had to fight some disconnect between what I guessed I was capable of vs the controls the player is actually given at level 0.
Assuming it really is meant to be an “outrun the other monsters” survival game, the main thing I would recommend adding is an event for the first time a monster turns its attention onto the player and gets close. When that happens, I feel like the words OH CRAP RUN! should practically cover the screen. My first few deaths were trying to figure out how to fight those first two monsters, not from failing to run away & stay alive well enough.
The world was very cool and the controls were very smooth once I entered fullscreen. Windowed mode kept trying to turn me to the right.