Complete 'Crossing Over' on hard

Kill 40 zombies with the bowie knife. (Map Pack 3 only)

Complete 'Welcome To Bad Company' on hard

Play 30 matches

Open all doors in the map. (Map Pack 3 only)

Link all teleport pads before round 7. (Map Pack 3 only)

(Online) Use Squad in the menu, find a friend and play one round

Get one kill with car, tank and plane

Cap 25 enemy flags

Use the parachute once (2 seconds)

Capture five flags

Melee kill one enemy player