| Achievement | How to unlock
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| 100 DOG TAGS | AMASS 100 DOG TAGS IN A SINGLE GAME.
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| 100 KILLS | KILL 100 ENEMIES IN A SINGLE GAME.
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| 1000 KILLS | KILL 1000 ENEMIES IN A SINGLE GAME.
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| 200 DOG TAGS | AMASS 200 DOG TAGS IN A SINGLE GAME.
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| 500 KILLS | KILL 500 ENEMIES IN A SINGLE GAME.
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| AD INFINITUM | KILL 2500 ENEMIES WHEN PLAYING INFINITE MODE.
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| BOSSING IT | DEFEAT ANY BOSS WITHOUT TAKING A HIT.
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| CAKEWALK | COMPLETE THE GAME ON 'EASY'.
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| DUNES CLEARED | COMPLETE THE DUNES AREA.
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| DUNES S RANK | ACHIEVE AN S RANK IN THE DUNES.
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| FACILITY CLEARED | COMPLETE THE FACILITY AREA.
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| FACILITY S RANK | ACHIEVE AN S RANK ON THE FACILITY AREA.
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| FOREST CLEARED | COMPLETE THE FOREST AREA.
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| FOREST S RANK | ACHIEVE AN S RANK IN THE FOREST.
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| HAPPY ENDING | COMPLETE THE GAME AND RECEIVE THE GOOD ENDING.
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| HARD CORPS | COMPLETE THE GAME ON 'HARD'.
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| HEAD RUSH | COMPLETE BOSS RUSH MODE.
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| HQ S RANK | ACHIEVE AN S RANK IN THE HQ.
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| LAB CLEARED | COMPLETE THE LAB AREA.
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| LAB S RANK | ACHIEVE AN S RANK IN THE LAB.
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| MAXED OUT | MAX OUT ALL OF YOUR STATS.
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| MILLIONAIRE | SCORE A MILLION POINTS OR MORE.
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| NEST CLEARED | COMPLETE THE NEST AREA.
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| NEST S RANK | ACHIEVE AN S RANK IN THE NEST.
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| NO-ONE LEFT BEHIND | RESCUE ALL HOSTAGES IN A SINGLE GAME.
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| PERIMETER CLEARED | COMPLETE THE PERIMETER AREA.
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| PERIMETER S RANK | ACHIEVE AN S RANK ON THE PERIMETER AREA.
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| STAY ON YOUR FEET | COMPLETE AN AREA WITHOUT ROLLING.
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| TOO CLOSE FOR COMFORT | KILL 100 ENEMIES WITH YOUR MELEE ATTACK IN A SINGLE GAME.
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| TWO'S COMPANY | COMPLETE THE GAME WITH TWO PLAYERS.
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| WANDERER | VISIT EVERY ROOM IN THE GAME.
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| XENOCIDE | KILL 5 ENEMIES OR MORE WITH A SINGLE EXPLOSION.
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