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.
Win a battle without losing any units.
Successfully complete training.
Construct 300 power-ups.
Destroy 300 power-ups in combat.
Train 500 infantry units.
Build 200 aerial units.
Attack 300 enemy players.
Win 375 campaign battles.
Build 100 boosters.
Collect 300,000 coins.
Accumulate 1,500 energy.
Collect from your headquarters.
Build 100 defensive structures.
Attack 100 enemies who have attacked you.
Complete 20 social quests.
Reach level 20.
Lose 1,000 infantry units.
Win a battle using 3 or more power-ups.
Set a bounty on 100 enemies.
Attack other players 1,000 times.