Funny game, unfortunately, collisions. Everyone else talked about them already, but another thing I'd like to see added is an options menu. Specifically for controls (or atleast a guide for controls, since i had to figure everything out by myself), mouse sensitivity and to turn off motion blur. I commend the effort though. The sound effect for snae taking damage is a bit sus though...
Also, have a button other than esc for pausing in the web version. Since esc also makes the game quit out of fullscreen which is quite annoying.