I like how you turned innocent 'candy' theme into a horrible bloodshed. Because a revenge is sweeter than any candy can possibly be.
However the controls are weird, the game is almost a first-person shooter, but it's mixed with some weird top-down view control scheme. It's really hard to aim, and when the enemy is behind, it's actually invisible and kills you in a couple of seconds.
Maybe adding some medikits to restore hp would also make gameplay better, however it's just a minor thing compared to the controls.