I fell, and then I kept falling,.. fooorreeevvver :).
Things for improvement:-
Bit of UI showing health, and progression, access to settings like volume etc (and a quit button in none WebGL versions).
Bit more work on level design/layout perhaps, so I don't fall forever, or I do fall and die (and then respawn?), etc.
Other than that the controls have a good feel, good feedback from enemy and players hit, nice having arrows as well, enjoyed having the option of weapons. Well done, I had an enjoyable play through :)