This is pretty fun!
The inclusion of the melee attack and how it's connected to your health does a great job at incentivizing risky behaviour.
The visuals are very clean, and the audio complements the game nicely.
Overall this is very well put together.
The only thing I'm not sure about are the enemies with the ring/wave attack that entirely surrounds them. I couldn't figure out how to defeat them without losing health (that might just be a skill issue on my part though).