Abbey of the True Gun

The Abbey of the True Gun is a secret chamber in The Gungeon, accessed through a hidden passage found in a type of room that's found in the Gungeon Proper. Accessing it for the first time grants the achievement "Reverence for the Dead" and the Blood Brooch.

The Abbey always has a secret room containing Brother Albern.

This floor also introduces Pews, strips of wood that act as indestructible obstacles which impede movement while allowing bullets to pass over them.

How to access

• The Abbey of the True Gun is only accessible after visiting the Oubliette and acquiring the Old Crest.
• The Old Crest must be carried into the Gungeon Proper without taking damage and placed on an altar, which can be found in a room with 7 big statues of bullet warriors, which will reveal stairs leading to the Abbey of the True Gun.

Boss

Old King

Defeating the Old King rewards the player with a locked synergy chest as well as a normal boss reward. Like all bosses in secret floors, there is no Master Round for beating the Old King flawlessly.

Enemies

In a few room layouts, certain enemies are guaranteed to be jammed regardless of curse.

Icon	Name	Description
	Bullet Kin	Slowly walks towards the player, firing bullets.
	Veteran Bullet Kin	Slowly walks towards the player, firing bullets and predicting the player's movements.
	Cardinal	Slowly walks towards the player, firing bullets. Occasionally fires a cluster of 5 bullets that homes in on the player.
	Confirmed	Slowly walks towards the player, periodically firing four slithering lines of bullets.
	Red Shotgun Kin	Slowly walks towards the player, occasionally firing a tight spread of 5 bullets. Has a chance to fire 6 bullets in all directions upon death.
	Blue Shotgun Kin	Slowly walks towards the player, occasionally firing a wide spread of 5 bullets quickly followed by a wide spread of 4 bullets. Has a chance to fire 6 bullets in all directions upon death.
	Skullet	Slowly walks towards the player, occasionally firing two spreads of triangular bullets.
	Spent	Walks towards the player and attempts to deal contact damage.
	Hollowpoint	Floats towards the player, rapidly firing bullets. Periodically disappears and reappears elsewhere in the room.
	King Bullat	Periodically fires bouncing bullets in all directions. Spawns several Bullats and Shotgats upon death.
	Pinhead	Walks towards the player and explodes upon death. IF the player gets too close, it will leap towards the player and explode.
	Poopulon	Occasionally spins, releasing a large amount of spiraling bullets in all directions.
	Bloodbulon	Moves towards the player and attempts to deal contact damage. Becomes larger and slower as it takes damage. Releases many bullets in all directions upon death.
	Skusket	Has two lines of bullets orbiting it. Slowly floats towards the player, firing skulls that home in on the player and split into 6 bullets upon being destroyed.
	Bookllet	Occasionally fires bullets towards the player in various patterns, such as R, N, and Φ shapes.
	Blue Bookllet	Occasionally fires bullets towards the player in various patterns, such as R, N, and Φ shapes or rings of bullets that pulse back and forth.
	Green Bookllet	Occasionally fires bullets towards the player in various patterns, such as R, N, and Φ shapes or a large clover shape.
	Muzzle Wisp	Dashes three times in random directions, then releases a ring of flaming bullets. Leaves behind a patch of fire upon death. Sets the player on fire upon contact.
	Cubulon	Frequently fires bullets in all directions in a diamond shape.
	Apprentice Gunjurer	Fires bullets in a variety of rotating shapes, such as a square, circle, triangle or x. Occasionally disappears and reappears elsewhere in the room.
	Gunjurer	Summons 6 bullets, during which time any bullets fired at it will be absorbed. The 6 bullets along with any absorbed bullets are then fired at the player. Occasionally disappears and reappears elsewhere in the room.
	Aged Gunsinger	Buffs all enemies in the room, increasing their health and speed. They will cancel their spell and run away if the player is too close or they take too much damage.
	Wizbang	Teleports around the room, occasionally creating a projection of itself near the player that explodes into bullets in all directions.
	Bullat	Launches itself at the player, dying in the process.
	Shotgat	Launches two projectiles in a V shape at the player, dying in the process.
	Grenat	Launches an exploding projectile at the player, dying in the process.
	Spirat	Launches itself at the player, dying in the process. Predicts the player's movements, and can reposition itself several times before hitting walls.
	Bullet Shark	Charges towards the player, releasing bullets to the sides of itself.
	Gun Cultist	Erratically moves around the room and shoots at the player. Has the ability to dodge roll.
	Gun Nut	Periodically strikes the ground with its sword, releasing a wide 90 degree arc of bullets towards the player. Can only aim in the eight compass directions.
	Lead Maiden	Hops around, then opens up and fires three rings of triangular bullets that stick to walls, then fire towards the player. Cannot be damaged while closed. Explodes upon death.

Trivia

• Statues of Kaliber can be seen as decoration in the boss room.
• Paintings of the High Priest can be found throughout the floor.
  • In addition, paintings of the minions summoned in the boss fight against Interdimensional Horror are mysteriously found throughout the floor.
• The music that plays in the Abbey was originally used in Keep of the Lead Lord during the alpha.

Gallery

• 

  The open entrance to the Abbey.

• 

  A Lectern holding a book with a double-page showing a Shotgun Kin and a Bullet Kin.

• 

  The same Lectern but mysteriously going empty upon the Old King's defeat.

• 

  Lecterns with closed books, revealing their hardcovers to have crosshair symbols.

• 

  The Jam-like ooze found in the pits of the Abbey. This could correlate with the various Jammed enemies naturally found within the Abbey regardless of having Curse or not, or it could just be blood.

• 

  A lone Pew.

Portraits

• 

  A bullet kin with the slug removed.

• 

  A portrait of the Low Priest.

• 

  A Fallen Bullet Kin.

• 

  A Blue Shotgun Kin but with a key shape patterned on his slug.

• 

  One of Interdimensional Horror's minions.

• 

  The High Priest appearing to be pulling back his hood similar to his boss intro.

See also

• Chambers

The Gungeon
The Breach		Keep of the Lead Lord		Gungeon Proper		Black Powder Mine		Hollow		Forge
Secret Chambers
Oubliette		Abbey of the True Gun			Resourceful Rat's Lair			R&G Dept.		Bullet Hell