Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Bossfight Like A Boss	Kill a boss/miniboss by smashing into it.
Courage Wolf	Complete all levels at least on normal difficulty.
Crate Soulmate	Collect all 25 crates hidden in various locations.
Dead Island	Purge the island of the dead.
Demolicious	Destroy 1,000 buildings.
Firsties!	Complete the first main mission objective.
Get to the choppa!	Complete at least one mission with each helicopter.
Gun Guru	Complete a (non-tutorial) mission using only the machine gun.
High Five!	Destroy your chopper with your own guided rocket.
Kamikaze	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.
Parselmouth	Complete the 'Stomp The Snake' mission on expert difficulty level in co-op mode.
Pedro 4 Prez	Find and eliminate Pedro in all locations.
Pointdexter	Score at least 500,000 points in a single mission.
Quickie	Complete a (non-tutorial) mission in 8 minutes or less.
Rock It Man	Complete a (non-tutorial) mission using only rockets.
Star Wolf	Get all stars in all missions.
Team Playa	Complete a mission in co-op mode.
Twofer	Kill two enemy vehicles with one rocket.