Hi there,

looks like this is your first game and your first game jam submission? Really nice results and nice to see that you obviously did all art work your self! I think a bit of story could have helped to set the theme and explain the relation to the jam and the game's title. I like the idea of a skill tree and I think you can easily expand upon the exising material for future extensions of this game. 

Best of luck and hope to see you in future jams as well :)