The game was fun and very responsive, also very easy to play. Good job!
The wheel was a bit frustrating for me. You added a second phase to the spin where it rotates for a random ammount and then you made it automatically stop at 0. I would change the mechanic. Make the wheel spin faster and the stop button stop it out right, leave the same speed but set the extra rotation at a fixed value, make the player control the spin speed and then the wheel stops on its own... there are a lot of different ways you could do it. Also remove the behaviour which makes it stop the moment it hits 0. If you give a sense of control to the player, taking it away afterwards is a very bad idea, make it seem like the player always had control or don't give it to begin with.
Also the damage upgrade is overpowered compared to other abilities. I would divide the ability into two, one for just damage, another for bigger range. If you want to keep it at 8 abilities I would remove the upgrade to level ups, I found it the less useful.
It might sound like I didn't like the game that much after all of that but you get a 25/25 from me. The game is awesome! Good job on the team.