So I am really not sure what is not supposed to work. You can use the arrow keys (left arrow and right arrow) to kick. Also you can navigate through the menu using WASD. You can buy items with teeth you get from enemies.
I will check the code an see if there is an obvious mistake, but honestly it should really work.
Nonetheless: thank you very much for playing my game.
(I may add two small tutorial graphcis showing the controlls.)