Nice. My main issue was finding my way through the dark caverns - I feel like even weak fire effects should maybe generate more light. Surprisingly managed to not burn myself to death. Getting a good flamethrower going was hard but satisfying. But I mostly just flambé'd the goblins directly because it was simpler.
Only real bug I noticed was being able to summon winds in the void outside of the caves. Unless the glowy stuff in the caves isn't supposed to look like it's glitching out of this universe.
I do wish the wind wasn't quite so weird looking. You need a particle that visualizes it for gameplay purposes, but if it picked up motes the color of the underlying dust instead of the rainbow particles we have now, that'd be a big improvement I think. Or maybe a Wind Waker-style white swooshy shape.
Anyway I rate it great/8, but you know I'm biased.