The game is cool, the upgrade system and weapon options are interesting. The tutorial is always important for a game that has several mechanics. There are some points that could be improved:
-The camera effect ends up being a nuisance because it is too high, and this makes it difficult to know the distance to the enemy.
-The movement of the enemies when they get close to the player.
-On the invisible walls, an object could be placed to symbolize this.
-The volume slider didn't work for me.
The game is very good, good job to the team!