Full list of all 20 World At Arms (Windows) achievements worth 200 gamerscore. It takes around 40-50 hours to unlock all of the achievements on Windows.
Collect from your headquarters.
Win 375 campaign battles.
Attack other players 1,000 times.
Lose 1,000 infantry units.
Destroy 300 power-ups in combat.
Build 100 defensive structures.
Construct 300 power-ups.
Build 100 boosters.
Train 500 infantry units.
Attack 100 enemies who have attacked you.
Complete 20 social quests.
Attack 300 enemy players.
Build 200 aerial units.
Accumulate 1,500 energy.
Reach level 20.
Set a bounty on 100 enemies.
Collect 300,000 coins.
Win a battle using 3 or more power-ups.
Win a battle without losing any units.
Successfully complete training.