Play with a Mercenaries 2 developer or a player who already has this Achievement.
Play co-op with a friend.
Make all factions HOSTILE.
Continue playing to unlock this secret achievement.
Verify all high value targets.
Unlock all shop items.
Unlock all landing zones.
Destroy 50 objects with an RPG launcher.
Destroy 50 objects using melee.
Successfully complete 10 action hijacks.
Capture all outposts for a single faction.
Destroy 50 objects with a grenade.
Beat the Winching Challenge three times.
Complete three different races.
Destroy 20 buildings.
Earn $1 million.
Complete one of Fiona's challenges.
Get 25 headshots.
Try accelerating and braking at the same time.
Use 20 airstrikes in co-op.
Snipe 50 enemy vehicle drivers.
Come in first during a co-op race.
Destroy 200 objects from the gunner seat in co-op.
Earn $1 billion.
