Nice idea for the gameplay! I also liked the aesthetics. As for the controls:
-it's a bit weird that you have to move diagonally to go straight; maybe think of how to change the way input affects your character's movement in your CharacterController
-if you have LMB as the attack button, it would be better if the character shot in the direction the cursor is pointing; if you want him to just shoot in the direction of movement, maybe change the button to Ctrl
Apart from that:
-I like the fact that you managed to add settings to your menu; it would have been even better if you also added it to the pause menu
-in the second level I got pushed away from the map by the summoned companions xD, so make sure to set up your collisions in a way that prevents this.
Of course those are just some suggestions in case you wanted to keep developing your game. I'm aware 10 days was a short amount of time and you did really well (especially since your game is much more refined than mine xD)