Pixel snap is not on so sometimes there would be lines between the floor. Not sure if it's WebGL being WebGL or an actual mechanic that sometimes while I'm aiming it will just shoot the arrow anyway, that's slightly annoying considering you only have three arrows. Arrow behavior is a bit unpredictable for my liking, as the bouncing off walls would be cool if it didn't literally send the god damn thing a mile away that I have to now run past 500 enemies to go get it. Would much prefer it to just stick to the wall. Also, I would say at least put some tutorials in game, I had to looked at the screenshots to figure out how to aim.
Imho, the game is good, and is honestly only drag down by having to fit the theme. If the player have infinite amount of arrows I bet it would actually way more fun, would make the bouncing off walls and enemies a lot more fun when you don't have to run a kilometer every time you shot someone.