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Boss Challenge Room

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Boss challenge room closedBoss challenge room open

(Not to be confused with the Challenge Room)

Boss Challenge Rooms take on the appearance of a regular Challenge Room on the inside and can be found in second to ninth floors (However it can be found on the first floor, it is unknown if this is a bug). It offers an item which is normally a drop from common bosses. Upon picking up an item, you have to fight two waves of bosses. In the earlier floors, you have to fight Monstro followed by 3 short Larry Jr.s. In intermediate floors, you have to fight Chub and then Peep. In the later floors, the bosses are Monstro II and Loki (at the same time).

The door to the room has a skull overlapping the two swords. On the map, the logo is a bloody sword.

To enter you must have one heart or less remaining (not counting soul hearts).

NotesEdit

  • ??? always has access to the boss challenge room.
  • As with regular Challenge Rooms, If the room is adjacent to a secret room, you may also enter it by destroying the wall that separates the rooms. Notice however that, unless you have XRay Vision, the wall will close again when the fight begins.
  • If an activated item is used a split-second before the first boss spawns at the beginning of a Boss Challenge Room, there is a chance that both the first and second boss will spawn simultaneously and you will have to fight them both.
  • If you pause the game right after picking up the upgrades and if you wait so that you hear 2-3 poofing sounds which monsters make when they spawn, all of the bosses will spawn at the same time. 
  • The first wave will also spawn if you pick up an item spawned by a Blood Donation Machine or a Beggar.

GalleryEdit


Rooms

Treasure room icon Treasure Room · Shop icon Shop · Secret room icon Secret Room · Arcade icon Arcade · BossRoomIcon Boss Room
Challegne room icon Challenge Room · Super secret room icon Devil Room · Super secret room icon I AM ERROR

Rooms in the Wrath of the Lamb

Curse room icon Curse Room · Sacrifice room icon Sacrifice Room · Super secret room icon Super Secret Room
Boss challenge room Boss Challenge Room · Libary icon Library · Angel room icon Angel Room

Start a Discussion Discussions about Boss Challenge Room

  • Trepassing To Boss Challenge Room

    2 messages
    • To trepassing to there if that not unlock, the secret room will helping, just, destroy the blocks what its mean to go BCR, aka boss challenge room.
    • You can do that with any room except the boss room, unless you have X-Ray Glasses (in which case you can trespass every room). I believe the w...

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