Have 30 Turrets at once

Hit the enemy with 2 missiles at once

Destroy a Sentinel before it activates using one of your own Sentinels

Win a match after getting hit with a Missile

Win a match with a Missile explosion

Finish the single player campaign

Win a skirmish match on Medium difficulty

Win a skirmish match on Hard difficulty

Win a skirmish match on Very Hard difficulty

Win 20 skirmish matches

Win a multiplayer match

Win 20 multiplayer matches