An homage to that one scene in Oldboy. You know the one. Swing your trusty hammer to smite your foes! Collect their teeth for good health! Get that vengeance before the vengeance gets you!
Aim and swing with the mouse;
Press the left mouse button to hammer;
Press A to move left;
Press D to move right;
Press S to crouch and pick up teeth!
P.S. I'm really sorry about uploading an installer rather than a single runtime executable. It was a foolish, foolish rookie mistake, and it will not happen by me again.