Corrupted Prison

"Donating your body to science" takes on a whole new meaning when you're still alive.

The guards were the first to succumb. Unless no one noticed the difference in the prisoners...

It's unthinkable that even the stones are infected.

The Corrupted Prison is a short, optional biome between the second and the third level. It's accessed through the Toxic Sewers using the Spider rune and leads to the Ancient Sewers or the Ramparts (1+ BSC).

General information[]

Access and exit[]

The Spider Rune is required to access this area through the Toxic Sewers. A section only accessible by wall climbing in both levels leads to the Corrupted Prison.

There are two exits out of the Corrupted Prison. On all difficulties, the player can go to the Ancient Sewers. With at least 1 BSC active, a second door will lead to the Ramparts.

Iron cells[]

Two locked doors are found at the end of the biome, next to the exit doors. Behind both these doors there is a 2-item choice altar. If the player finds the Iron Cells Key, which drops from a random enemy, they can choose to open one door to access the item inside.

Level characteristics[]

Scrolls[]

The Corrupted Prison contains only one Scroll of Power, obtained through the cursed chest at the start of the biome.^[a]

Enemy tier and gear level scaling[]

In the table below, you will find the gear level and enemy tier of the Corrupted Prison based on difficulty.

Difficulty	Normal	Hard	Very Hard	Expert	Nightmare/Hell
Gear level	III	III	III	IV	VI
Enemy lvl tier	8 - 9	11 - 12	12 - 13	14 - 15	15 - 16
Enemy Health tier	Base	9 - 11	13 - 14	15 - 17	20 - 22

Loot and shops[]

Main level[]

1 cursed chest at the beginning of the biome, right before the one-way door.^[a]
- Not affected by the damned Aspect.
A weapon or skill shop around the halfway point of the level.

Boss Stem Cells rewards[]

1 BSC: Exit to the Ramparts.

Enemies[]

Arguably the most dangerous and lethal enemies of the Corrupted Prison are the Slammers, which have a very high DPS and its attacks cannot be parried, and the Toxic Miasmas, which follow the player from platform to platform. This is worsened by the Protectors that can spawn between large groups of enemies, making it easy to get swarmed by fast, tanky enemies.

In the table below, you will find which enemies are present in the Corrupted Prison depending on difficulty level. For each enemy, any common, uncommon, rare or legendary blueprints they carry are indicated. When applicable, the minimum difficulty level for blueprint acquisition is specified in brackets.


Enemy	Normal	Hard	Very Hard	Expert
Zombie	Blood Sword, Double Crossb-o-matic, Bobby Outfit (1 BSC)
Rancid Rat	Porcupack
Toxic Miasma	Barbed Tips
Grenadier	Fire Grenade, Magnetic Grenade
Shocker	Flamethrower Turret
Slammer	Flawless, Tactical Retreat
Protector		Corrupted Power, Explosive Decoy, Warrior Outfit (3+ BSC)
Weirded Warrior			Hattori's Katana, Blade Master's Outfit
Inquisitor				Lightning Bolt, Vampirism, Mage Outfit

Trivia[]

In the alpha and beta branch of v1.5, this biome was known as Corrupted Confinement.^[1]

Gallery[]

Fully explored map of Corrupted Prison showing general generation of the level.

History[]

1.5: Introduced.
2.0: Decreased Rancid Rat density.

Footnotes[]

↑ ^1.0 ^1.1 Because v1.5 decreased the amount of cursed chests, there is always a guaranteed one in the first room of this biome. To the right of the chest there is a door that will close behind the player, no matter if they had or hadn't inflicted the curse upon themselves.

References[]

↑ The Corrupted Update Official patch notes, 2019-10-09

[cursed-chest-1] 1.0 ^1.1 Because v1.5 decreased the amount of cursed chests, there is always a guaranteed one in the first room of this biome. To the right of the chest there is a door that will close behind the player, no matter if they had or hadn't inflicted the curse upon themselves.

[2] The Corrupted Update Official patch notes, 2019-10-09

[a]

[1]