Nice character design and animations. Overall, the visuals are pleasant but rough around the edges.
In the arena part, the enemy spawn points need some indication, I died after an enemy spawned on my position.
It's cool that you have options on how to attack, but the second combo needs an additional effect or increased damage. Holding the attack button seems easier and faster with the same damage output.
The metroidvania part is pretty linear. Some branches with basic HP and energy upgrades would have been nice.