Bossfight Like A Boss
Kill a boss/miniboss by smashing into it.
Complete all levels at least normal difficulty.
Collect all 25 crates hidden in various locations.
Purge the island of the dead.
Destroy 1,000 buildings.
Complete the first main mission objective.
Get to the choppa!
Complete at least one mission with each helicopter.
Complete a (non-tutorial) mission using only the machine gun.
Destroy your chopper with your own guided rocket.
Kill 10 vehicles by smashing into them.
Lord of the Skies
Kill 100 enemy helicopters.
Obtainer of the Lost Ark
Locate and winch up the Lost Ark.
Complete the 'Stomp The Snake' mission on expert difficulty level in co-op mode.
Pedro 4 Prez
Find and eliminate Pedro in all locations.
Score at least 500,000 points in a single mission.
Complete a (non-tutorial) mission in 8 minutes or less.
Rock It Man
Complete a (non-tutorial) mission using only rockets.
Get all stars in all missions.
Complete a mission in co-op mode.
Kill two enemy vehicles with one rocket.