Shop

Shops are encountered at the lobby and at random locations within the dungeon. The player can buy items using Gold (dungeon shops) or Diamonds (Lobby shops). The shops within the crypt offer equipment that is lost upon death; the shops in the lobby offer permanent upgrades and unlockable items.

Dungeon Shops

Regular Shop

Entrance	NPC	Currency	Sells	NPC Drops
			All types of equipment.	Crown of Greed

The location is random, but the shop will always be reachable through its door. The shop is surrounded by golden shop walls. There is only one shop per level. If the Coin Shop shopkeeper dies for any reason, they will stop appearing for the rest of the run, and the current items will be free. If the Coin Shop shopkeeper happens to leave the shop for any reason, the shop items will be free, and the shopkeeper will still return on the following levels. Like any other monsters the shopkeeper can activate traps, and if you attack the shopkeeper and manage to lure him to a trapdoor, the shopkeeper falls into the trapdoor, you can take the shop items for free, and on the following levels the shopkeeper appears like nothing happened.

Monstrous Shop

Entrance	NPC	Currency	Sells	NPC Drops
			All types of equipment.	Nothing

Very rarely, the normal shopkeeper will be replaced by a red-eyed version who is immediately hostile and drops nothing on death. Killing him will make all the items in the shop free without removing the "real" Shopkeeper from later levels. It is currently unknown if there's a specific trigger for this. The Monstrous Shopkeeper can be distinguished by his red eyes and distorted singing. The most obvious sign that he is present is that the shop walls are silver, though they behave identically to the regular gold walls.

Secret Shop

Entrance	NPC	Currency	Sells	NPC Drops
			High ranked equipment.	Crown of Greed

There is a chance that upon entering a new level, this shop will spawn in place of the normal shop. Instead of a door, there will be a cracked gold wall which requires breaking to gain access to. Within the shop contains high tier or rare items. Note that the shopkeeper here is the same as the standard shopkeeper. If you kill him, regular shops will be empty, and vice versa.

Glass Shop

Entrance	NPC	Currency	Sells	NPC Drops
			Glass equipment.	Glass Jaw

Reached by stepping on a green travel rune found in a cracked stone wall.

Health Shop

Entrance	NPC	Currency	Sells	NPC Drops
			Food and heart containers.	Gluttony Charm

Reached by stepping on a blue travel rune found in a cracked catacomb wall.

Blood Shop

Entrance	NPC	Currency	Sells	NPC Drops
			All types of equipment. Always includes at least one golden weapon. (unless player character is weapon locked)	Blood Drum

Reached by stepping on a red travel rune found in a cracked stone wall. Purchasing items can kill you if you don't have enough hearts to cover the cost. Damage preventers such as Shield Spells and Glass Armor won't protect you, but the Potion can save your life if you overspend. The blood shop is guaranteed to spawn on 1-1 or 1-2 in All Zones mode.

Transmogrifier

Entrance	NPC	Currency	Sells	NPC Drops
			You may replace a piece of equipment with a random new one from the same category.	Scroll of Transmute

Reached by stepping on a purple travel rune found in a cracked stone wall. Price increases with each use.

Shriner

Entrance	NPC	Currency	Sells	NPC Drops
			Allows you to choose 1 of 3 shrines.

Reached by stepping on an orange/green travel rune found in a cracked dirt wall. Green, Red, and Blue dragons will spawn when attempting to blow up the shrines or the Shriner itself. These dragons do not count as a mini-boss kill and do not drop gold. After killing the dragons, you can use one shrine for free and the other 2 disappear.

Pawnbroker

Entrance	NPC	Currency	Sells	NPC Drops
			Allows you to sell an item for half of the shop price.	Coupon 100 * Groove Chain multiplier Gold

Reached by stepping on a yellow/pink travel rune found in a cracked catacomb wall. When damaged, he transmutes the entire shop area into tar and will the chase the player. The pile that he stands on contains references to many other indie games. Clockwise from center: fez from Fez, [katana from ?], sword from Rogue Legacy, helmet from Shovel Knight, golden idol from Spelunky, bow and arrows from TowerFall Ascension, skateboard from OlliOlli, Finn's sword from Adventure Time (TV show)

Conjurer

Entrance	NPC	Currency	Sells	NPC Drops
			Summons a random item of a category of your choice.	Pack of Holding

Reached by stepping on a light blue travel rune found in a cracked dirt wall. Price doubles with each purchase.

Battle Shop

Entrance	NPC	Currency	Sells	NPC Drops
	n/a	n/a	1 of 3 items.	n/a

Reached by stepping on a black/yellow travel rune found in a cracked dirt wall. The player can choose 1 of 3 items. As soon a tile that an item appears on is reached, the player will face 2 mini-bosses and 2 regular enemies to unlock the exit.

Secret Shop

Entrance	NPC	Currency	Sells	NPC Drops
		/	A single powerful item, for very cheap.	100 * Groove Chain multiplier Gold

Can only appear behind the top wall of the glass, health, and blood shops. Very rare. A bomb, blood drum, glass shovel, blood shovel, or scroll of gigantism (with obsidian/glass/crystal shovel or pickaxe) is required to break through. The wall is not cracked. The only way to see if a secret shop is present is by holding a torch near the top wall, or by looking at the size of the room. If a secret shop spawned, then the top wall of the host shop will be one tile lower than normal Uses the same currency as the shop with which it spawned. Technically counted as part of the normal coin shop, so the item will become free if the normal shopkeeper dies or leaves their shop.

Lobby Shops

These shops use for currency, which can be found on Single Zone runs. Most of them must be unlocked by using a specific Key to open their cage, which can be found on a specific floor during a Single Zone run.

Hephaestus

NPC	Location in Lobby	Unlock
	Top Left	Always available

Allows the player to buy items that can be found in chests after purchasing. On the first playthrough after the purchase, the player will always encounter the item in a locked chest.

Dungeon Master

NPC	Location in Lobby	Unlock
	Top Middle	Always available

Sells permanent heart containers. Their price increases after each purchase, reaching 12 for the third one (sixth in total). The Dungeon Master also sells extra chests that spawn in every playthrough after purchasing (often in hidden rooms) and permanent coin multiplier upgrades.

Merlin

NPC	Location in Lobby	Unlock
	Top Right	Zone 1-2, requires digging to a secret room that contains the Gold Key

Allows the player to buy Spells, Rings, and Consumables that can be found in chests after purchasing. On the first playthrough after the purchase, the player will always encounter the spell or item in a locked chest.

Beastmaster

NPC	Location in Lobby	Unlock
	Upper Left	Zone 1-1, requires purchasing the Gold Key from that floor's shop for 10 gold

Allows access to all enemies the player has previously defeated in normal gameplay for practicing purposes.

Bossmaster

NPC	Location in Lobby	Unlock
	Upper Right	Zone 1-3, requires purchasing the Gold Key from that floor's shop for 250 gold

Grants access to two subsections of her area - mini-bosses and boss fights - for practicing purposes. Purchasing one mini-boss unlocks all of their Zone variants (i.e., purchasing the Green Dragon also unlocks the Red and Blue variants). This also applies to bosses.

Weaponmaster

NPC	Location in Lobby	Unlock
	Lower Left	Zone 2-2, requires purchasing the Gold Key from that floor's locked shop for 400 gold

Allows the player to pick almost any weapon (including its gold, glass, blood, obsidian, titanium and onyx variations) for training with the Beastmaster and Bossmaster. Character-locked weapons are excluded (the Flower, the Golden Lute, and Eli's prosthetic shovel).

Codex

NPC	Location in Lobby	Unlock
	Lower Right	Always available

Allows the player to master four advanced playing techniques. Including how to kill dragons, shopkeepers, as well as how to exploit traps using enemies and items.

Janitor

NPC	Location in Lobby	Unlock
	Bottom Left	Always available

Removes items from the item pool for 1 for the next run.

His room has a "Next" and "Reset" tile, allowing you to scroll through the items, or reset items you have cleaned.

Diamond Dealer

NPC	Location in Lobby	Unlock
	Bottom Right	Zone 2-3, requires digging for the Glass Key on Zone 2-2 and bringing it to the cage on Zone 2-3 without taking any damage.

Allows the player to purchase items to take with them on their next non-All Zones Mode run.

Note: Aria and Coda are able to pick up weapons, but this causes them to immediately die of cowardice upon starting a run.

Characters who are locked to an item of a specific type other than Aria or Coda can not pick up items of that type and pass through it. upon collecting it as another character and swapping to someone with that slot locked before starting a run will result in the item on the ground unable to be picked up.