Traveler’s Tall TaleG 70

2v2 and 1v1 modes don't seem to count for this achievement.

Achievement description is: win a round on 8 different arenas

There's 14 different arenas split between 3vs3 and 2vs2/1vs1 modes.

For 2vs2/1vs1 modes, the following maps are available:
Ring Ruckus, Cliff Clash, Bastion Bash, Brawlin' Bog, Pinnacle Punch-Out, Swinging Spire, Roller Rumble.

For 3vs3 modes, the following maps are available: Astrolabe Escapade (only in Knockout and Oddball modes), Rockslide Ridge, Crumbling Keep, Sinking Swamp, Spellbound Study, Gutsy Gauntlet and Spinning Spikes.