Great visuals and very juicy! It is however a bit difficult (it takes something like a second) to spot the flies, as they're small and blend in with the flowers. And, currently the camera is set in a way that, it does not look like the player is moving, but rather that the ground and the flies are moving... What I mean is that, because the player, the flames of the flamethrower, and the UI all never move on the screen, they look like they don't move... which seems kinda obvious, but in my opinion it's a lot more satisfying if the camera follows the player. watch this for more info: https://www.youtube.com/watch?v=pdvCO97jOQk
Didn't find bugs (hahaha) but damn, you have the same problem as me with your webGL build: it does not run.