The base mechanic of your game it's really cool, nice sound efects, cute pixel art but the character's walking animation doesn't feel natural I think it's because the head doesn't move at all in a walk cycle, and also regarding the shadow, I think the shadow should be visible only on the ground that means only the bottom side of the circle representing the shadow of the player, and also I think it shouldn't change when the player is walking because if the light source is above his head the shadow stays the same. But overall I enjoyed playing your game, good job!!