After your base has been significantly damaged, destroy the enemy base.
Finish the first campaign level.
Build more than 50 walls in a single player level.
Reach the maximum worker cap.
Reach the maximum attack unit cap.
Join your first online game.
Total kills greater than 5,000
Assist another player in co-op.
Win an online "vs" match.
Complete the campaign on any difficulty.
Win a 4 player "vs" game.
Win 20 online "vs" matches.
