Benighted Lost is an unlockable character in Benighted Soul, a mod for The Binding of Isaac.

Chest Chest (Consumable slot)
Chest
A random chest (Finishing Keys are Bomb required)

No Heart character.

Familiar items are removed from pools.

Hold drop key to open a chest.

Flight.

Spectral tears.

10% chance to fire key tears with +1 damage (same as Sharp Key; Luck 10: 50%).

Can attack at any direction (same as Analog Stick).

nolostbr items and some useless items would be decomposed into keys, and spawns chest for Q-2-or-above items.

Hold use active key of Chest Chest to transform chests into weapons/armors/floats or repair them.
(Detail in GuruWiki)

Play as The Lost / Tainted Lost, die from Mulliboom at stage 1, a bomb at stage 3, Mom at stage 6 and Satan at stage 10 to unlock.

The following special synergies and interactions for Benighted Lost have been documented.

* Note that not all possible synergies and interactions are listed here.

Chest weapons have the ccorresponding attack effects of the character.

Opened chest transformed will start with a much lower durability, and opened Wooden Chest can not be transformed into armor.

In an uncleared room with enemies, the durability of the chest weapons and floats will decrease per second.

Armors will decrease therir durability to protect character from taking damage.

In Greed Mode, all chest weapons and floats have 50% chance not to decrease their durability.



Chest:
• Weapon:
Durability 100.
Fires big split key tears.

• Armor:
Durability 2.
1.5s invincible time.
+ 0l15 speed.

• Float:
Durability 75.
Count 2, orbitals.
Fires key shielded tears to projectiles or enemies.


Bomb Chest:
• Weapon:
Durability 210, unrepairable.
Fires 8 scattering tears in short distance twice, with small shockwave.

• Armor:
Durability 6, unrepairable.
1.5s invincible time.
- 0l15 speed.

• Float:
Durability 180.
Count 2, orbitals that block projectiles.
Spawns a Golden Chest item and a trinket when exhausted.


Spiked Chest / Mimic Chest:
• Weapon:
Durability 111.
Rushes at a direction with collision damage, during which block projectiles and fire tears to enemies.
Comes back when the charge is run out or touch the border of the room.

• Armor:
Durability 2.
4s invincible time.
Every frame, deals 1 damage to enemies nearby.

• Float:
Durability 90.
Count 3, followers that block projectiles.
Deals collision damage.


Eternal Chest:
• Weapon:
Durability 70.
50% chance not to decrease durability.
Fires 8 widely scattering holy piercing bouncing tears.
Clears charge at a new room.

• Armor:
Durability 4.
25% chance not to decrease durability.
1.1s invincible time.

• Float:
Durability 70.
50% chance not to decrease durability.
Stays at the center of the room.
Fires piercing holy shielded tears to 4 at most projectiles or enemies.


Old Chest:
• Weapon:
Durability 109, decreases even in a cleared room.
Recovers 2 durability when killing enemies, and 8 more for killed bosses.
Fires 3 bones at a high speed, and overheat if keep attacking for a while.
Can not attack during overheat.

• Armor:
Durability 4.
Loses 1 durability per 19s until 1 left.
Recovers 0.1 durability when killing enemies, and 1 more for killed bosses.
1.7s invincible time.

• Float:
Durability 88, decreases even in a cleared room.
Count 4, move diagonally.
Fires shielded bones to 3 at most projectiles or enemies.


Wooden Chest:
• Weapon:
Durability 90, unrepairable.
Recovers 3 durability when a room is cleared; Full durability next level.
Fires 3 blue flames.

• Armor:
Durability 2, unrepairable.
Full durability when entering another room or a room is cleare.
0.7s invincible time.

• Float:
Durability 75, unrepairable.
Recovers 3 durability when a room is cleared.
Full durability next level.
Count 3, orbitals that block projectiles.
Deals collision damage.
Spawns blue flames when touching projectiles or enemies.


Mega Chest:
• Armor:
Durability 5.
0.5s invincible time.
- 0.2 speed; Can recover durability by absorbing chests.
Absorbing a type of chest for the first time increases max durability and invincible time but decrease speed.


Haunted Chest:
• Weapon:
Durability 45, would be replaced by Chest one when exhausted.
Fires C Section tears.

• Armor:
Durability 1.
0.5s invincible time.
Basic damage multiplier increases to 120%.
nolostbr items and some useless items have an extra option in cycle.

• Float:
Durability 60, would be replaced by Chest one when exhausted.
Count 2, orbitals.
Spawns lil ghosts against enemies (same as Ghost Bombs).


Locked Chest:
• Weapon:
Durability 140.
Fire short small lasers when charing.
Fires a big laser when fully charged.
Clears charge at a new room.

• Armor:
Durability 3
1s invincible time.
+ 1 luck.

• Float:
Durability 100.
Orbital.
Fires shielded lasers to 3 at most projectiles or enemies.


Red Chest:
• Weapon:
Durability 120, can only be repaired by heart pickups.
Fire short Brimstone.

• Armor:
Durability 6, can only be repaired by heart pickups.
1.2s invincible time.
+ 0l3 damage this level for every time blocks damage.

• Float:
Durability 90.
Orbitals.
Orbit a enemy and conjure magic circles of Black Powder.
The enemy gets Brimstone Curse.


Mom's Chest:
• Armor:
Durability 9, unrepairable.
0.7s invincible time.
The durability of chest weapons and floats become infinite. To unlock below, must play on Hard Mode.

• Heart: Treasure Key
• Isaac: Wildering Mirror
• ???: The Horned-Axe
• Satan: Moon Streets
• Lamb: AKEY-47
• Mega Satan: Brother Albern Truth Chest
• Boss Rush: Odd Key
• Delirium: Chest Chest
• Mother: Neopolitan
• Beast: Knock
• Greed: Fomalhaut
• FINISHED: The Silver Key Isaac dies in a chest, and then Benighted Lost controls the chest as what a ghost can do.
So why not control more to feel not so lonely?

The way to unlock Benighted Lost is a reference to The Lost in early version.

Some of the unlocks are ideas from Cultist Simulator and Enter the Gungeon.

• Download Benighted Soul from the Steam Workshop.