gears of war around the world achievement help

Hey, Im trying to get this achievement

Around the World
Win a ranked match on every versus map

BUT I don't know what maps I need to play on and if I need to finish first

Help?

There's no order...
Gridlock
Canals
Fuel Depot
Clocktower
War machine
Tyro station
Rooftops
Masoluem
Mansion

Correct me if im missing any other maps but you dont have to play Subway, Process, Garden, Bulletmarsh, Old bone, and raven down because those are DLC but the rest you have to play