Any way to tell which arena maps you've played?

[omally72]

My buddy and I are trying to get the Colosseum Warrior achievement, but we've played the maps out of order and we can't figure out which one we're missing. Any way to tell which ones you've played or not?

[Chane]

I don't think it's possible to see your progress for this achievement.

There are a total of 11 different multi-player environments, you need to play a round on each of them to unlock the achievement. The different environments are:

Garden
Market
Castle
Rabbit
Wickerman
Arch
Stronghold
Black Forrest
Courtyard
Sandstorm
Oasis

The fastest way to play through the environments is to head into the Arena playlist and play a match on the following arenas:

Defense of Rome (Garden, Market & Castle)
Teamwork (Rabbit & Wickerman)
World Tour (Arch, Rabbit & Stronghold)
The Frontier (Black Forrest & Oasis)
Endless Hordes (Courtyard & Sandstorm)

Credit to Jedi Moonknight for the information regarding the environments and BluWolve for confirming the playlist.