They plan to do this with a system that includes running and jumping, ducking and vaulting your way across the environment while you are fighting your opponents. It sounds a lot like the up and coming game Brink, from this first description.

Plot-wise though… well, read for yourself:

Square says there will be a variety of interesting characters that you’ll play as, as well as a unique and powerful arsenal and different ways to use the environment to your advantage. Not only this, but each character also has their own finishing move and a take-down that will mock and strip your opponent of their pride, and we all know that that is the best way to spend your time in a shooting game.

Pique your interest, Ranters?

Gun Loco will be available in 2011 exclusively on the Xbox 360.