I really like the concept, and switching between top-down and 3rd person views is cool. Teaching the mechanics more gradually would be helpful. In the first 2 levels the player only needs to shoot directly at the target, or at the recast target. Bu then in the 3rd level the difficulty increases a lot. I like the tight visual look, but I would try to highlight the targets more, and really differentiate what you are aiming for, and what kills you. Overall great job!