| Achievement | How to unlock
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| Artifact Hunter | Collect all of the mysterious artifacts.
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| Corrupted | Defeat The Corrupted.
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| Demon | Defeat The Demon.
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| Djinn | Defeat The Djinn.
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| Dual Pistol Expert | Complete the game using only the dual pistols.
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| First Upgrade | Find a shield or weapon upgrade.
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| Found: Assault Rifle | Find the assault rifle blueprint.
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| Found: Grenade Launcher | Find the grenade launcher blueprint.
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| Found: Rocket Launcher | Find the rocket launcher blueprint.
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| Found: Shotgun | Find the shotgun blueprint.
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| Found: Sniper Rifle | Find the sniper rifle blueprint.
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| Frozen | Defeat The Frozen.
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| Hardcore | Complete the game on hardcore difficulty.
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| Hell Spider | Defeat the Hell Spider.
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| Leap Of Faith | Blindly jump off the edge in the Gate Fortress.
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| Legion Veteran | Complete the game on normal difficulty.
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| Lights Out | Kill the Hell Spider boss using the chandelier.
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| Master at Arms | Find all of the weapon blueprints.
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| New Game+ | Complete the game on any difficulty in New Game+ mode.
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| Perfect: Corrupted | Defeat The Corrupted without taking any damage.
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| Perfect: Demon | Defeat The Demon without taking any damage.
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| Perfect: Djinn | Defeat The Djinn without taking any damage.
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| Perfect: Frozen | Defeat The Frozen without taking any damage.
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| Perfect: Hell Spider | Defeat the Hell Spider without taking any damage.
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| Perfect: Shadow | Defeat The Shadow without taking any damage.
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| Perfect: Shapeshifter | Defeat The Shapeshifter without taking any damage.
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| Piece of Cake | Complete the game on easy difficulty.
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| Shadow | Defeat The Shadow.
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| Shapeshifter | Defeat The Shapeshifter.
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| Shield Scavenger | Find all of the shield upgrades.
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| The End | Defeat Mephistopheles.
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| The Impossible | Defeat Mephistopheles without taking any damage.
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| Upgrades? Hah! | Complete the game without upgrading any of the weapons.
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| Viktor | Complete the game on hard difficulty.
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