You can find the details and list of all available doors in Nunholy in this guide.
All Doors in Nunholy
Here is a list of all doors:
Moon Door

- Contains:
- Moonlight Blessing: Gain or Strengthen a Vampire Power (Ultimate Ability Slot)
Affinity Door

- Contains:
- Fresh Blood (Level Up or Gain Currency)
- Ruby Gem (Used for Upgrading Main and Secondary Weapons after a run or increasing Companion Affinity)
Garlic Door

- Contains: Lillian NPC (Affinity Gives: Extra Garlic Pots, Advanced Garlic Chance, Discount on Items)
- Sells: Garlic (Food that grants protective shield against Vampire attacks)
Ritual Door

- Contains: Fresh Blood (Level Up or Gain Currency)
Blacksmith Door

- Contains: Enhancement Circle (Upgrade an Artifact with a random bonus)
Demon Door

- Contains: Mini Boss Room, drops chest with random Artifact once boss dies.
Blood Gem Door

- Contains: Fresh Blood (Level Up or Gain Currency) and Blood Ore through the room that directly drops Fresh Blood when broken
Chalice Door

- Contains: Blood Grail (Increase your characters Maximum Health)
Healing Door

- Contains: Nemera NPC (Affinity Gives: Blood Donation + Transfusion Effects Increase, scales per affinity.
- Abilities: Tranfusion Gains HP, Donation Sacrifices HP for Fresh Blood)
Silver Door

- Contains: Fresh Blood (Level Up or Gain Currency) and Silver Currency (Used for: Purchase items from Human Merchant)
Merchant Door

- Contains: Evalaine NPC (Buys and sells Artifacts, Affinity Gives: Reroll Count +1, Sale Price +5% Scaling per level)
Vampire Door

- Contains: Main Boss
- 4 Fresh Blood pedestals that protect the bosses coffin and spawn waves when opened
- Once the Main Boss is defeated, spawns Portal (Awards a Legacy passive bonus) then teleport the player to Depths
- Depths Contains: Sister Seraph NPC (Affinity Gives: Healing Amount Increase, Scales per level)
- Ability: Heals the player after Main Boss encounter based on affinity.