Complete the indicated task to unlock the achievement.

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