I played until I had 80 mana bucks, but I couldn't find any way to check the skill tree when I was in the game so I didn't know I was only 20 short of unlocking the rapid fire. I thought it was just points so I quit and restarted at the time.
It feels like a bootleg Vampire Survivors in a way, on a level I'd expect a first project to be. It's an okay expirience, and an important stepping stone. I feel like the biggest improvemnt that could be made for enjoyment of the player is adding a level up bar to the next skill. And also adjusting the amount required, as 100 is way too much for the first unlock considering the low variety of enemies.
Big props for making all the stuff from scratch and starting your journey in game design ♥