I love the title, I love this game idea, and the execution is also pretty good. The fact that you teleport to the guy you shoot makes this really fast-paced, I feel like I'm constantly needing to think really fast about where I'm shooting next.
Just a suggestion, I think there could be more differences between bob's many forms. Maybe one guy could reverse your controls, or constantly move forward like a ship. I'd love to see this expanded upon.