Unlockables

Throughout the game you willl be able to unlock a lot of different content. These contents can be tracked in the Unlocks menu.

Icon	Name	Type	Requirement	Effect
	Experienced	Background	Reach progression level 1.	+1 Starting Level. -3 LCK
	Survivor	Background	Reach progression level 2.	+5 HP Bonfire Healing
	Wildling	Class	Reach progression level 3.	Unlocks the Wildling.
	Strong	Background	Reach progression level 4.	+2 STR, -2 INT. Heavy Throws passive effect (increased throw strength, separate effect from Throw Hard).
	Nimble	Background	Reach progression level 5.	+2 SPD. Reduced fall damage.
	Training Dummy	Special	Reach progression level 6.	Adds a scarecrow to the lobby, which can be used as a training dummy. (The scarecrow does not have feelings, despite claims to the contrary. Do not empathize with the scarecrow.)
	Bookworm	Background	Reach progression level 7.	-1 STR and -1 DEX but every spell you learn starts at level 2.
	Illiterate	Background	Reach progression level 8.	Your character starts with 5 bombs but is unable to read any scrolls or spellbooks.
	Merchant	Background	Reach progression level 9.	+25 starting gold. 25% Discount at Shops. (Only affects the player using the background)
	Ascetic	Background	Reach progression level 10.	Increased stats for each floor beaten without equipment (weapons excluded). Breaking holy vow is permanent (Lose 50% of gained stats when armor is equipped).
	Farsighted	Background	Reach progression level 11.	+1 light radius. Increased ranged damage.
	Snake Eater	Background	Reach progression level 12.	Potions of Poisons heal you (15HP), but Potions of Regeneration are less effective (15HP). Start with 1 point of poison resistance and 2 (unidentified) poison potions.
	Wanted	Background	Reach progression level 13.	Begin the game with a Stolen Ring (+10 crit chance). Shopkeepers will attack you on sight.
	Potion Addict	Background	Reach progression level 14.	Heal 4 HP when drinking any potion.
	Stoic	Background	Reach progression level 15.	-33% Status Effect Duration. Reduced received knockback.
	Boomerang Wielder	Background	Reach progression level 16	Start with 2 boomerangs.
	Random	Class	Reach progression level 17	Spawn in the lobby as a skeleton. You will begin the game as a random class with a random background.
	Hound Master	Class	Reach progression level 18	Unlocks the Hound Master.
	Mimic Whisperer	Background	Reach progression level 19	Every chest turns into a mimic, which become friendly and able to be picked up.
	Bloody Adherent	Background	Reach progression level 20	Heal in combat when below 25% HP.
	Disciple of the Smith	Background	Reach progression level 21	Bonfires have a chance to grant a stacking bonus to equipped items until unequipped.
	Disciple of the Scholar	Background	Reach progression level 22	Magic scrolls and books can increase Int.
	Cursed Adherent	Background	Reach progression level 23	Greatly increased chance of cursed items from chests.
	Acolyte of Light	Background	Reach progression level 24	Ability: Circle of Light.
	Acolyte of Chaos	Background	Reach progression level 25	+??? -??? (Effects of the Deranged will activate on you approximately every 45 seconds).
	Faithless Heathen	Background	Reach progression level 26	Gain stats from destroying shrines. -13 luck.
	Armored	Background	Complete the game as a Knight.	Start with +6 defense and -2 dex armor. Knight exclusive
	Crossbowman	Background	Complete the game as a Rogue.	Start with a crossbow enchanted with Weightless Arrows and Arrow Trajectory instead of the short bow. Rogue exclusive
	Heirloom	Background	Complete the game as a Mage.	Start with the Heirloom Ring (+3 INT, -1 VIT and -1 SPD) instead of the magic rod. Mage exclusive
	Will of the Elements	Background	Complete the game as a Wilding.	Start with the Elemental Caestus. Wilding exclusive
	Flail Wielder	Background	Complete the game as a Houndmaster.	Start with a Heavy Flail with Slow Enemies instead of the wooden club. Houndmaster Exclusive
	Tinkerer	Background	Defeat the Vine Lord.	Start with a grappling hook. -1 SPD
	Death’s Acolyte	Background	Clear 3 floors while wearing equipment with the "death becomes easier to encounter" effect.	Your maximum HP is locked to 1 but you deal heavily (~10x) increased damage.
	Alternate Cave Theme	Music	Kill all Cave bosses.	Alternate music theme that has a chance to replace the Cave theme on some floors.
	Alternate Forest Theme	Music	Kill all Forest bosses.	Alternate music theme that has a chance to replace the Forest theme on some floors.
	Alternate Catacombs Theme	Music	Kill all Catacombs bosses.	Alternate music theme that has a chance to replace the Catacombs theme on some floors.
	Alternate Rift Theme	Music	Kill all Rift bosses.	Alternate music theme that has a chance to replace the Rift theme on some floors.
	Trophy	Special	Defeat The Lost Adventurer.	Visual change to the lobby
	Hard Mode	Game Mode	Beat the game on normal difficulty.	Adds a lever to the lobby that allows you to enable the Hard Mode.

Progression

Most backgrounds are unlocked by reaching certain progression levels. You gain experience bases on some factors that determine how well you did in a run.

The experience calculations are as follows:

XP Score: x^1.2 * 10 =

Floor Score: x^1.5 =

Boss Score: x * 7 =

Gold Score: x / 50 =

...Total Score: