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Gungeon Guide
Enter the Gungeon

Dungeon Objects Guide (Mirrors, Black Market & Munchers)

2026-07-19

How the interactive objects of Enter the Gungeon work: Mirrors, the Demon Face and the Black Market, Munchers and Evil Munchers, and the Heart Machine.

Dungeon Objects Guide (Mirrors, Black Market & Munchers)

A handful of interactive objects are scattered through the rooms of Enter the Gungeon. None of them go into your inventory, but each has its own rules, and using one in the wrong order or the wrong way can waste the opportunity entirely.

The sections below cover MirrorMirror, Demon FaceDemon Face, Muncher, Evil Muncher and Heart MachineHeart Machine in that order, explaining how each is used, what it costs, and what to watch out for. Shrines are out of scope here — see the shrine list for what each one costs and gives.

Mirror

Mirror
Mirror

Mirrors show an unlocked chest in their reflection. Move your character's reflection next to the reflected chest and press interact to open it — this shatters the mirror and adds 3.5 Curse. Shooting the mirror also adds 3.5 Curse but makes the chest impossible to obtain.

  • Reflected chests can be MímicoMímico
  • Reflected chests can be Glitch ChestGlitch Chest, but without the usual glitch animation
  • Freezing the mirror obscures the reflection, but the chest can still be opened normally
  • Bullets do not appear in the reflection and cannot damage the reflected chest

Demon Face

Demon Face
Demon Face

Demon Faces are large green wall carvings that grant access to the Black Market. They can spawn on any floor except the Resourceful Rat's Lair, R&G Dept., and Bullet Hell.

Entry requires at least 1 Curse, or 100 CartuchosCartuchos on hand (or having held 100 that chamber). Without these, the Demon Face deals half a heart of damage and ejects the player. After the first visit, a teleporter spawns inside for permanent re-entry.

Inside, Comerciante de fogueos – Old RedComerciante de fogueos – Old Red, Bruja comerciante – CursulaBruja comerciante – Cursula, Comerciante de líquidos – Professor GooptonComerciante de líquidos – Professor Goopton, and Comerciante de llaves – FlyntComerciante de llaves – Flynt each stock three wares at half price — the exception is Comerciante de llaves – FlyntComerciante de llaves – Flynt, whose LlaveLlave-priced goods are not discounted. A corridor on the east side leads to a bonus Encargado de tiro – WinchesterEncargado de tiro – Winchester shooting range whose entry fee is also halved (see Winchester Minigame GuideWinchester Minigame Guide).

Shooting water-based weapons (MegarremojadorMegarremojador, SirenaSirena, BarrilBarril, GlaciarGlaciar, LanzaburbujasLanzaburbujas, MegamanoMegamano, RegadoraRegadora, LacrimógenaLacrimógena) into the Demon Face's mouth yields a free random A calidad or S calidad gun or item, with no Curse or coin requirement; interactive water barrels and the Tanque de aire comprimidoTanque de aire comprimido do not trigger it.

  • While the Señor de los EncasquilladosSeñor de los Encasquillados is present, all merchants stop selling
  • Merchants already met on the main floor may appear as duplicates in the Black Market
  • Stealing in the Black Market only affects Black Market merchants, not the same merchants elsewhere in the run; one guaranteed steal is available per merchant (see How to Steal from ShopsHow to Steal from Shops)
  • During a Rainbow ModeRainbow Mode run these four merchants have empty shelves, but the Demon Face can still be sprayed for its A calidad or S calidad reward

Muncher

Muncher
Muncher

Munchers appear near shops or in secret rooms throughout Enter the Gungeon. Feed them two guns and they produce one new gun in exchange.

Calidad mechanics

The Calidad of the gun a Muncher produces falls between the Calidad of the two guns fed to it, inclusive. It will not normally produce a gun above or below that range — but if neither gun fed was S calidad, there is a 5% chance to receive a gun one tier higher.

Fixed combinations

The following combinations always produce a specific gun, regardless of Calidad. Feed one gun from the first column and one from the second column to trigger the recipe.

Notes

Evil Muncher

Evil Muncher
Evil Muncher

Evil Munchers are always found in the secret room of Bullet Hell. They can also rarely appear in secret rooms on other floors, and have a small chance to replace normal Munchers. Sometimes the secret room is shaped like a skull.

To unlock Cenizas de pistoleroCenizas de pistolero, feed the Evil Muncher a total of 10 guns across any number of runs. Progress carries over between runs.

After Cenizas de pistoleroCenizas de pistolero is unlocked, the Evil Muncher consumes a random number of guns before spitting one back out; when it does, that gun is A calidad 75% of the time and S calidad 25% of the time. How many you need to feed before each payout is therefore unpredictable.

Notes

Heart Machine

Heart Machine
Heart Machine

The Heart Machine stores CorazónCorazón pickups for later use when you are already at full health. When a heart drops and you are full, picking it up shows a "save for later" prompt and stores it in the machine instead of healing you.

The machine appears in shops and in elevator rooms leading to the next floor. The map interface shows how many hearts are currently stored. Stored hearts are only usable on the current floor — they cannot be carried to the next.

  • When withdrawing, each Corazón completoCorazón completo is automatically split into two Medio corazónMedio corazóns
  • The VampiraVampira NPC exchanges Medio corazónMedio corazón for 20 CartuchosCartuchos (multiplied by the current floor's price modifier)
  • If full on health, clear the room first before collecting dropped hearts to avoid wasting them