The sounds were superb! (Did you make them or find them?) I liked how your god and the enemies were all abstract - it added some mystery, uniqueness, and otherworldliness. The atmosphere and graphics were also nice, and the combat was a really interesting mechanic.
Some things that could be improved: More than one texture for the walls to make areas feel more unique. Some kind of health system so you don't lose the first battle you mess up on. (Jam rules require "some basic stats".) Slightly less bobbing when standing still would be nice; I thought I was drunk at first.