Smashing things is fun! The animations are well made and I found it funny how you used the simplicity of the Godot logo to your advantage.
However, currently it seems that the best strategy is to use the fire magic constantly as it is much more effective than spamming the smash button. With the health regeneration, I was able to stay alive indefinitely just by moving my cursor all over the screen while holding RMB.
I think it would be great to have various enemies, needing more decision-making from the player on who to smash first, as currently, you just have to kill everything on sight.
Wishing you the best on your gamedev journey!