| Achievement | How to unlock
|
|---|
| 100% | Unlock every other achievement
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| Affection | (no official description)
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| Alice | Kill Alice (Secret)
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| Amelia | Unlock Amelia
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| April | Kill April (Secret)
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| Arena | Complete Arena
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| Arena (Amelia) | Complete Arena as Amelia
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| Arena (Chloe) | Complete Arena as Chloe
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| Arena (Elizabeth) | Complete Arena as Elizabeth
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| Arena (Emma) | Complete Arena as Emma
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| Arena (Lucretia) | Complete Arena as Lucretia
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| Arena (Marah) | Complete Arena as Marah
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| Art Gallery | (no official description)
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| Art Gallery Treasure | (no official description)
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| Autumn | Kill Autumn (Secret)
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| Beehive | (no official description)
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| Beehive Treasure | (no official description)
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| Broken Heart | (no official description)
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| Burning Cave | (no official description)
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| Burning Cave Treasure | (no official description)
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| Cave | (no official description)
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| Cave Treasure | (no official description)
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| Chloe | Unlock Chloe
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| Clean Mind | Complete ending 4 with clean mind all the time
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| Cleaning | Kill all bosses in episode 1
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| Climbing up the ladder | Reach Undergrounds
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| Collection | Find everything
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| Crypt | (no official description)
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| Crypt Treasure | (no official description)
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| Dark Tunnel | (no official description)
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| Dark Tunnel Treasure | (no official description)
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| Death | Die
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| Deceased Haunt | (no official description)
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| Delve Into Madness | Unlock first ending
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| Den | Reach Den
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| Doctor's Black Market | (no official description)
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| Doctor's Black Market Treasure | (no official description)
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| Eidolon | Kill Eidolon (Secret)
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| Elizabeth | Unlock Elizabeth
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| Entozoon | Kill Entozoon (Secret)
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| Eradication | Kill all bosses in episode 3
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| Everything Is Clearer Now 1 | Unlock second ending
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| Everything Is Clearer Now 2 | Unlock third ending
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| Everything Is Clearer Now 3 | Unlock final ending
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| Fountain | (no official description)
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| Get Healthy | Collect 5 health bonuses in one game
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| Get Lucky | Get very lucky
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| Glass Cannon | Have only 1 heart container
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| Good at dodging 1 | Complete episode 1 without collecting hearts and healing herbs
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| Good at dodging 2 | Complete episode 2 without collecting hearts and healing herbs
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| Good at dodging 3 | Complete episode 3 without collecting hearts and healing herbs
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| Good at dodging 4 | Complete episode 4 without collecting hearts and healing herbs
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| Green Viper | Kill Green Viper (Secret)
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| Haunt | Kill Haunt (Secret)
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| I killed it! | Kill a boss
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| Insanity | Get really insane!
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| L | (no official description)
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| L (Chloe) | (no official description)
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| L (Elizabeth) | (no official description)
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| L (Lucretia) | (no official description)
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| L (Marah) | (no official description)
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| L Amelia | (no official description)
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| Liquid Sisters | Kill Liquid Sisters (Secret)
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| Love Burrow | Find Love Burrow
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| Love Collection | Find all Love Items
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| Lover | (no official description)
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| Lucretia | Unlock Lucretia
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| M L | (no official description)
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| M L (Amelia) | (no official description)
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| M L (Chloe) | (no official description)
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| M L (Elizabeth) | (no official description)
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| M L (Lucretia) | (no official description)
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| M L (Marah) | (no official description)
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| Manless Face | Kill Manless Face (Secret)
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| Manless Face (Amelia) | Kill Manless Face as Amelia
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| Manless Face (Elizabeth) | (no official description)
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| Manless Face (Lucretia) | (no official description)
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| Manless Face (Marah) | (no official description)
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| Marah | Unlock Marah
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| Mask | Kill Mask (Secret)
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| Meat Bag | Kill Meat Bag (Secret)
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| Misery | Reach Misery
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| Murder | Kill all bosses in episode 4
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| Never Lucky | Get very unlucky
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| Null | (no official description)
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| Null2 | (no official description)
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| Past Is Here Forever 1 | Unlock fifth ending
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| Past Is Here Forever 2 | Manless Face (Elizabeth)25
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| Purge | Kill all bosses in episode 2
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| Quattro Stagioni | Kill 4 Seasons
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| Red Chest | Find a red chest
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| Red Viper | Kill Red Viper (Secret)
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| Secrets | Find a secret
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| Shattered Heart | (no official description)
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| Shopkeeper | Kill a shopkeeper
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| Shopping | Buy 5 items in one playthrough
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| Sinister Mask | Kill Sinister Mask (Secret)
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| Space | (no official description)
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| Space Treasure | (no official description)
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| Spirit | Kill Spirit (Secret)
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| Spirit (Amelia) | (no official description)
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| Spirit (Chloe) | (no official description)
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| Spirit (Elizabeth) | (no official description)
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| Spirit (Lucretia) | (no official description)
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| Spirit (Marah) | (no official description)
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| Spring | Kill Spring (Secret)
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| Summer | Kill Summer (Secret)
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| Sweetheart | (no official description)
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| The Doctor | (no official description)
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| The Riddle | Reach The Riddle
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| Turnip | Destroy a turnip
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| Two Hearts | (no official description)
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| Two Hearts (Amelia) | (no official description)
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| Two Hearts (Chloe) | (no official description)
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| Two Hearts (Elizabeth) | (no official description)
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| Two Hearts (Lucretia) | (no official description)
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| Two Hearts (Marah) | (no official description)
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| Void | (no official description)
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| Void Treasure | (no official description)
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| Winter | Kill Winter (Secret)
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| You Give Me Butterflies | Kill the fat man (Secret)
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