| Achievement | How to unlock
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| - Defeat Gauntlet Challenge Karai.
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| - Allow Leatherhead to get a Decakill on Sewer Rats.
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| - Complete a run with Portal of Power active.
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| - Complete Dockside Diplomacy.
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| - Defeat the Twin Assassins Hard Mode.
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| - Complete a run with Portal of Protection active.
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| - Complete City At War: Foot Clan Faceoff Hard Mode.
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| - Complete Illumination Hard Mode.
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| - Complete a run with Portal of Pacing active.
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| - Enter any Gauntlet Challenge Portal.
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| - Complete City At War: Mystic Strike.
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| - Complete City At War: Mystic Strike Hard Mode.
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| - Complete Rabid Rats Hard Mode.
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| - Defeat Shredder with the War Staff equipped through all chapters.
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| - Defeat Shredder with all Shimmering Portals active and the War Staff equipped through all chapters.
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| - Defeat the Ninja Elite Hard Mode.
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| - Complete a run with Portal of Plundered Pizza active.
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| - Defeat Gauntlet Challenge Leatherhead.
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| - Complete a run with Portal of Greater Power active.
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| - Defeat the Mystic Council.
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| - Complete Firewatch Hard Mode.
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| - Defeat Gauntlet Challenge Rocksteady & Bebop.
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| - Complete a run with Portal of the Foot active.
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| - Complete Dockside Diplomacy Hard Mode.
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| - Acquire one Astral Heart.
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| - Complete a run with Portal of Mice active.
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| - Complete a run with Portal of Paupers active.
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| - Complete City At War: Mutant Showdown Hard Mode.
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| - Defeat Punks in the Pipes Hard Mode.
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| - Enter any Shimmering Portal.
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| - Complete Fencing Lessons Hard Mode.
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| - Fight a boss with the Warstaff artifact equipped.
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| - Complete a run with Portal of Ultimate Power active.
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| - Complete a run with Portal of Scarcity active.
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- Mutants Live Around Here!
| - Complete City At War: Mutant Showdown.
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| - Equip a Legendary Turtle Power.
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| - Complete City At War: Foot Clan Faceoff.
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| - Complete Lurking Menace Hard Mode.
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| - Defeat Gauntlet Challenge Shredder.
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| - Complete the Perfect Run.
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| - Complete Mouser Mayhem Hard Mode.
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| - Complete a run with Portal of Immense Power active.
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| - Complete Pier Pressure Hard Mode.
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| - Complete Nightwatch Hard Mode.
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| - Defeat Alleyway Punks Hard Mode.
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| - Defeat Rocksteady & Bebop.
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| - Defeat Punks in the Pipes.
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| - Get defeated by an allied MOUSER.
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| - Receive a small care package from April and Metalhead.
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| - Defeat the Mystic Council Hard Mode.
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| - Receive a large care package from April and Metalhead.
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| - Complete City At War: Power Play.
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| - Complete City At War: Power Play Hard Mode.
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| - Complete a run with Portal of Storms active.
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| - Receive a super care package from April and Metalhead.
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- Tell Your Boss We're Coming
| - Defeat the Hand of Shadow Hard Mode.
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| - Complete a run with Portal of Projection active.
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- Troubled Bridge Over Water
| - Complete Bay Bombardiers.
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| - Complete Fencing Lessons.
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| - Defeat the Twin Assassins.
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| - Complete Bay Bombardiers Hard Mode.
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