What would happen if Nintendo gave Mario a shotgun?

If we cross a first-person shooter with Mario, we would probably end up something like the below video. It’s actually well done, complete with the epic Counter-Strike voice-over for first-blood, double-kill and multi-kill.

Added effects like squishing a Koopa to a bloody pulp or sending them into the air for target practice makes this a prize piece of video work.

This game looks fun to play, if it even exists.

If you could give this game a title, what would it be? Something like Shotgun Bros maybe.