Black Hole Achievement, Description, Unlock & Secret Number

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Description	Unlocked a new item.
Unlock	Defeat 20 portals
In-Game Secret Number	349 PS4 340
Platforms	All
DLC Required	Added in Afterbirth+
Achievement Description

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Description: Unlocked a new item.
Unlock: Defeat Ultra Greed as Apollyon
In-Game Secret Number: 316

Brown Nugget

Description: Unlocked a new challenge.
Unlock: Defeat Mom for the 1st time
In-Game Secret Number: 278

Aprils fool

Description: Unlocked a new item.
Unlock: Defeat Delirium as Magdalene
In-Game Secret Number: 283

Eucharist

Description: Unlocked a new item.
Unlock: Defeat Ultra Greedier as ???
In-Game Secret Number: 300

Meconium

Description: Unlocked a new item.
Unlock: Destroy 500 rocks
In-Game Secret Number: 350
PS4 341

Mystery Gift

Description: Unlocked a new item.
Unlock: Defeat Ultra Greedier as Samson
In-Game Secret Number: 301

Stem Cell

Description: Unlocked a new item.
Unlock: Defeat an Angel 10 times
In-Game Secret Number: 373
PS4 364

Angelic Prism

Description: Unlocked a new item.
Unlock: It's complicated
In-Game Secret Number: 391

Bone Heart

Description: Unlocked a new item.
Unlock: Defeat Delirium as Lazarus
In-Game Secret Number: 291

Compound Fracture

Description: Unlocked a new item.
Unlock: Participate in 31 Daily Challenges (they don't have to be consecutive; it will still count if you die in the first room)
In-Game Secret Number: 325

Dedication

Description: Unlocked a new item.
Unlock: Defeat Ultra Greed as The Forgotten
In-Game Secret Number: 399

Finger Bone

Description: Unlocked a new item.
Unlock: Complete challenge #33
In-Game Secret Number: 333

Charged Key

Description: Unlocked a new item.
Unlock: Defeat ??? as Apollyon
In-Game Secret Number: 312

Locust of Famine

Description: Unlocked a new item.
Unlock: Defeat Delirium as The Forgotten
In-Game Secret Number: 401

Book of the Dead

Description: Unlocked a new item.
Unlock: Defeat Isaac as The Forgotten
In-Game Secret Number: 393

Slipped Rib

Description: Unlocked a new item.
Unlock: Purchase from shops 50 times
In-Game Secret Number: 364
PS4 355

Coupon

Description: Unlocked a new item.
Unlock: Increase in size 5 times in a single run. Sources of increased size include "One Makes you Larger" pills, XI - Strength, and Magic Mushroom
In-Game Secret Number: 361
PS4 352

Huge Growth

Description: Unlocked a new item.
Unlock: Collect 10 "tears up" items or pills in one run
In-Game Secret Number: 378

Lachryphagy

Description: Unlocked a new item.
Unlock: Pick up 5 familiars in a single run
In-Game Secret Number: 355
PS4 346

Buddy in a Box

Description: Unlocked a new item.
Unlock: Collect every entry in the Bestiary (Bugged v190 - Mobs that don't exist in the bestiary are being counted. This allows Sin Collector to be unlocked without a complete bestiary)
In-Game Secret Number: 324

Sin collector

Description: Unlocked a new character.
Unlock: Defeat Mega Satan for the 1st time
In-Game Secret Number: 340

Apollyon

Description: Unlocked a new item.
Unlock: Open 20 locked chests
In-Game Secret Number: 371
PS4 362

Mr. ME!

Description: Unlocked a new item.
Unlock: Use I - The Magician or Telepathy for Dummies while already having homing tears (Sources of this effect include I - The Magician, Telepathy for Dummies, Spoon Bender, Sacred Heart, or Godhead).
In-Game Secret Number: 389

Baby-Bender