Easy "Ace" achievement...
	Various Steam Achievements...

Use the Bazooka as it is obtained during the first level. Its area-of-effect damage makes it much more forgiving than the other guns. Start the first level and use the revolver, because it hits the target instantly. Take it slow and kill every enemy with a single shot to the head.

Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Accomplished	Complete all the 150 mission objectives.
Ace	Hit an enemy with every shot in a mission.
Anvil of Justice	Defeat 1,000 enemies.
Arcade Addict	Play 25 arcade games.
Around the World	Play in all 3 locations during a single Arcade game.
Avid Gamer	Play Major Mayhem for 2 hours.
Banana Boat	Earn 3 medals on all Tropic missions in Classic mode.
BBQ	Defeat 100 enemies with barrel explosions.
Bed Time	Defeat the end boss (Classic or Survival mode).
Big Spender	Spend 100,000 coins in the Armory.
Black Widow	Defeat 50,000 enemies.
Bondage	Use the Silenced Pistol while wearing the Tuxedo.
Boomstick	Defeat 500 enemies with the Shotgun.
Boomstick Expert	Defeat 2,000 enemies with the Shotgun.
Bunny Hop	Jump 20 times in one mission.
C4	Score 50,000 points in Timebomb mode.
Call-Out King	Discover all the multiplier call outs.
Chicken Soup	Shoot 30 chickens in a single Arcade game.
City Slicker	Earn 3 medals on all Metropolis missions in Classic mode.
Clucking Mad	Use the Chicken Cannon and wear the chicken hat as the General.
Colonel's Bucket	Shoot 1,000 chickens.
Commando	Defeat 500 enemies with the Quadzooka.
Commando Expert	Defeat 2,000 enemies with the Quadzooka.
Completionist	Complete all the other achievements.
Corporal Kapow	Score 150,000 points in Arcade mode.
Dak Dak	Defeat 500 enemies with the Automatic Sniper Rifle.
Dak Dak Expert	Defeat 2,000 enemies with the Automatic Sniper Rifle.
Dead Silent	Defeat 500 enemies with a silenced weapon.
Dead Silent Expert	Defeat 2,000 enemies with a silenced weapon.
Disco Tech	Defeat 500 enemies with the Plasma Rifle.
Disco Tech Expert	Defeat 2,000 enemies with the Plasma Rifle.
Double Down	Get 100 double kills with the Shotgun.
Expertinated	Defeat 2,000 enemies with the Grenade Launcher.
Expertinated 2	Defeat 2,000 enemies with the Auto Launcher.
Four-Piece Pack	Shoot 4 chickens simultaneously.
Gangsta	Defeat 500 enemies with the Uzi.
Gangsta Expert	Defeat 2,000 enemies with the Uzi.
Giblets	Defeat 500 enemies with the Bazooka.
Giblets Expert	Defeat 2,000 enemies with the Bazooka.
Gold Farmer	Collect 10,000 coins.
Golden Shower	Earn 3 medals on all Desert missions in Classic mode.
Grave Robber	Remove 1,000 hats from enemies that are already dead.
High Roller	Earn a multiplier of x100.
Hot'n'Spicy	Defeat 2,000 enemies with a Chicken Cannon.
Invincible	Complete all the missions in a row without dying (Classic or Survival mode).
Mad Hatter	Remove 10,000 enemy hats.
Major Mayhem!	Score 250,000 points in Arcade mode.
Mechanic	Completely dismantle the Giant Death Machine.
Mega Kill	Defeat 4 enemies simultaneously.
Mode Mad	Unlock all the game modes.
Molotov	Score 20,000 points in Timebomb mode.
Money Bags	Have 10,000 coins in the bank.
Multi-Weaponry	Use 5 or more weapons in one Timebomb game.
My Hero	Rescue 100 hostages in a row.
Nam Vet	Finish the Tropics in Survival mode.
Nick of Time	Rescue 5 hostages in a single Timebomb game.
Nuke	Score 100,000 points in Timebomb mode.
Pinball	Defeat 500 enemies with Grenades.
Pinball Expert	Defeat 2,000 enemies with Grenades.
Pistolero	Defeat 500 enemies with the Pistol.
Pistolero Expert	Defeat 2,000 enemies with the Pistol.
Powder Keg	Trigger 100 barrel chain reactions.
Power Shot	Defeat 100 enemies by shooting through an object.
Powered Up	Purchase one of each of the 5 power ups.
Private Parts	Score 50,000 points in Arcade mode.
Professional	Defeat 500 enemies with the P99.
Professional Expert	Defeat 2,000 enemies with the P99.
Rambro	Use the Light Machine Gun and wear the red bandana as Rambro.
Rampage	Defeat 500 enemies with the Light Machine Gun.
Rampage Expert	Defeat 2,000 enemies with the Light Machine Gun.
Razor Burn	Get 1,000 Close shaves.
Reddy for Action	Defeat all the red bonus ninjas.
Repeat Offender	Play Major Mayhem on 3 consecutive days.
Revolver	Defeat 500 enemies with the Magnum.
Revolver Expert	Defeat 2,000 enemies with the Magnum.
Rifleman	Defeat 500 enemies with the Rifle.
Rifleman Expert	Defeat 2,000 enemies with the Rifle.
Rolly Poley	Perform 100 dive rolls.
Running Man	Run 50 kilometers.
Rushed Hour	Finish Metropolis in Survival mode.
S.A.M. I Am	Shoot down 100 enemy jets.
Saviour	Rescue 1,000 hostages.
Sergeant Six-Pack	Defeat 1,000 enemies shirtless.
Sharing is Caring	Check out our Twitter feed or Facebook page.
Sharp Shooter	Deflect 1,000 projectiles.
Shopping	Unlock all the clothing items in the Armory.
Sniper	Defeat 500 enemies with the Sniper Rifle.
Sniper Expert	Defeat 2,000 enemies with the Sniper Rifle.
Spicy	Defeat 500 enemies with a Chicken Cannon.
Splat	Defeat 500 enemies with the Automatic Shotgun.
Splat Expert	Defeat 2,000 enemies with the Automatic Shotgun.
Swiss Cheese	Defeat 500 enemies with the Minigun.
Swiss Expert	Defeat 2,000 enemies with the Minigun.
Tank	Defeat 100 enemy tanks.
Terminated	Defeat 500 enemies with the Grenade Launcher.
Terminated 2	Defeat 2,000 enemies with the Auto Launcher.
Thirsty	Finish the Desert in Survival mode.
Timebomber	Play 100 Timebomb games.
Weapons Free	Unlock all the weapons in the Armory.
Widow Maker	Defeat 10,000 enemies.