The PC warriors in Battlefield: Bad Company 2 Vietnam now have access to the "Operation Hastings" map, having completed the required 69 million team actions. Vietnam combatants on Xbox 360 are more than halfway through the unlock challenge, while PS3 players are approaching 30 million actions.

Team actions require you to assist your teammates by spotting enemies, healing, reviving, repairing and resupplying ammo. And when you're not doing those things, you're probably setting your flamethrower on the opposition in DICE's excellent $15 expansion.