There's a good game here, but it's held back by itself. The visual sfx go so far that the intro causes eye strain, and the on-hit slowdown lasts too long, giving the player way too much time to plan their next move. Not to mention that often I'd be getting slowdown for an enemy I've hit that I've already stopped paying attention to when I was in the middle of aiming at another target. Tone it down a bit and I'd bet it becomes much better, though!