| Achievement | How to unlock
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|---|
| A Legend in His Own Grime | Get 25 Legend arena scores.
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| A Perfect 10 | Take no damage and achieve Legend status in 10 arenas.
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| All Your Base | Complete Mission 6.
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| An Embarrassment of Liches | Kill 5,000 zombies.
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| Arm Robbery | Harvest each type of enemy that can be harvested.
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| Armed and Dangerous | Yaiba gets an armful.
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| Better Dying Through Chemistry | Cause 50 elemental effects.
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| Breaking Baddies | Congeal 50 enemies with bile crystals.
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| Can't Touch This | Counter each enemy type.
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| Card-Carrying Dismember | Kill 1,000 zombies.
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| Chain of Command | Achieve a 50-hit streak.
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| Cold Shard Cash | Collect all the elemental shards.
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| Combination On Lock | Achieve a 100-hit streak.
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| Cremation Station | Yaiba directs traffic.
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| Echo Location | Complete Mission 4.
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| Elementary, My Dear Monday | Cause each type of elemental effect on zombies and in the environment.
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| Flower Power | Collect all the health shards.
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| Gate Crasher | Destroy an obstacle with elemental effects.
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| Hell or High Slaughter | Complete every Mission on Hell difficulty.
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| I Hate That Guy | Complete Mission 5.
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| Insert Coin | Play Arcade Mode.
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| Izuna Drop the Mic | Complete every Mission on Hard difficulty.
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| Just the Tip | Complete Mission 1.
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| Knockout King | Execute each type of enemy that can be executed.
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| Limb Swim | Chain 5 or more executions together.
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| Lust for Unlife | Activate Bloodlust 10 times.
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| Mad Splatter | Yaiba reveals a family secret.
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| Makes Me Want to Throw Up | Throw 50 zombies.
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| Ninja Turdle | Complete Mission 3.
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| Ninjacked | Complete every Mission on Nightmare difficulty.
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| Patient 0 | Create 7 plague clouds.
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| Perky | Unlock all of Yaiba's upgrades.
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| Quartermaster | Complete Arcade Mode.
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| Reheated Leftover | Yaiba doesn't sleep well.
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| Rubble Trouble | Yaiba survives quite the tumble.
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| Slight Turbulence | Yaiba has a rude awakening.
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| Snot My Problem | Yaiba gets his hands dirty.
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| Staycation | Yaiba gets some fresh air.
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| Stone Carver | Complete Mission 7.
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| Swords and Swollcery | Yaiba brings up a good point.
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| That's a Clown Question | Yaiba joins the crowd.
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| That's Pretty Deep | Yaiba finds religion.
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| The Accidental Tourist | Yaiba sets aside time for traveling.
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| The City is Slicker | Complete Mission 2.
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| The Miracles of Science | Yaiba returns to the scene of the crime.
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| Time to Kill | Enter Ninja Time 50 times.
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| Too Many Words | Collect all of the story collectibles.
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| Valedictgorian | Get 50 Legend arena scores.
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| Well-Soiled Machine | Achieve a 200-hit streak.
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