Thank you very much for the feedback! Audio is being added now. Fullscreen gets weird with the browser version with screen tearing, might just leave it for the download version.
Definitely working on the control remapping, should be in the next update.
Thanks for trying it out! Just uploaded a new update with the mana system so the fire attack can't be spammed. Now enemies will drop up to 3 fireflies, phoenix fire costs one firefly to use.
still fixing the left facing attack bugs, will update again today or tomorrow.