| Achievement | How to unlock
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|---|
| Ace Trooper | Complete 10 missions using the Trooper PA-Gear.
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| All I Need's a Shirt | Complete a mission without receiving any damage.
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| Appetite for Destruction | Defeat 100 enemies using a Missile Launcher (Campaign)
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| Beam of Hope | Defeat 100 enemies using a Laser Cannon (Campaign)
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| Big Spender | Unknown.
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| Complete Arsenal | Obtain all weapons.
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| Courageous Defender | Resurrect a total of 10 players.
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| Defending the Earth Ain't Easy! | Earn the Title of Ensign in Mercenary.
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| Don't Get a Concussion! | Perform 30 E-Dodges in a single mission using the Trooper PA-Gear.
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| Doom from the Skies | Complete the prologue.
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| Drone Buff | Recover 55 M.I.A. drones.
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| Elite Customizer | Purchase all customization parts.
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| Energy Phalanx | Stop one enemy's attack during a mission using the Heavy Striker's E-Field.
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| Field Chemist | Defeat 100 enemies using an Energy Thrower (Campaign)
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| Forged in Fire | Complete 1 mission on the Disaster difficulty level (Online)
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| Friends Through Iron and Smoke | Complete 1 mission on the Hardest difficulty level (Online)
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| Fully Stocked | Purchase all items.
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| God of War | Defeat a total of 3000 enemies (Campaign)
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| Guardian of the Field | Complete a mission in which not a single NPC ally retreats due to damage (Campaign)
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| Immortal Soldier | Reach 10000 Hit Points.
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| Iron Annihilator | Use a field support item (Campaign)
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| It's a Bird! It's a Plane! It's... | Travel 2000 meters in a single mission using the Jet Lifter PA-Gear.
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| Lead Poisoning | Defeat 100 enemies using a Shotgun (Campaign)
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| Legendary Swordsman | Defeat 100 enemies using a Sword (Campaign)
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| Letter of Apology | Unknown.
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| Lifter Captain | Complete 10 missions using the Jet Lifter PA-Gear.
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| Loose Cannon | Defeat 100 enemies using a Grenade Launcher (Campaign)
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| Lorentz's Fist | Defeat 100 enemies using a Railgun (Campaign)
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| Master Striker | Complete 10 missions using the Heavy Striker PA-Gear.
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| N.o.z.o.m.i. | Complete the story.
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| Optical Expert | Defeat 100 enemies using a Laser Rifle (Campaign)
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| Sharpshooter | Defeat 100 enemies using a Sniper Rifle (Campaign)
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| Smoke and Flames | Defeat 100 enemies using a Rocket Launcher (Campaign)
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| That Might've Been Important! | Unknown.
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| The Soldier Who Resisted Despair | Complete 1 mission on the Disaster difficulty level (Offline)
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| Total Completion | Unlock all achievements.
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| Trigger Happy | Defeat 100 enemies using a Minigun (Campaign)
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| Ultimate Rider | Complete 10 missions using the Prowl Rider PA-Gear.
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| Unspoken Promise | Defeat 100 enemies using a Satellite Weapon (Campaign)
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| Valiant Defender | Defeat 100 enemies using an Assault Rifle (Campaign)
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| Wartime Tycoon | Earn a cumulative total of 1,000,000 Credits.
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| Wealth of Gems | Earn a cumulative total of 15,000 Energy Gems.
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| Welcome to Dystopia | Play Mercenary for the first time.
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| Your Friendly Neighborhood Prowl Rider | Travel 200 meters without touching the ground in a single mission using the Prowl Rider PA-Gear.
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