This page is a room-by-room breakdown of Oriental Sorcery Lab. All "recurring features" of a given room — namely, enemies that respawn whenever the room is reentered and blue chests that self-refill whenever the zone is exited and reentered — are listed in bold above one-time collectibles and events. All chest icons shown in the map screen below are the zone's blue chests.
- Screen 1:
- Screen 2:
- ×4 Gusion, ×1 Gaap, ×1 Haagenti
- Benjamin Judd's third appearance (exchange Waystone for 10,000G) (requires Dimension Shift)
- Green chest containing Talisman Scarf (requires Dimension Shift)
- Screen 3:
- ×2 Gusion
- Screen 4:
- ×2 Gusion
- Exit to Dian Cécht Cathedral
- Screen 5:
- ×1 Ninja
- Breakable wall leading to Screen 6
- Screen 6:
- Green chest containing Kitsune Mask
- Screen 7:
- Screen 8:
- Screen 9:
- ×2 Gusion, ×1 Gaap
- Green chest containing Crimsonite Equipment/R
- Screen 10:
- Screen 11:
- ×1 Deathtrap
- Screen 12:
- Green chest containing Hair Apparent VIII
- Screen 13:
- ×1 Ninja, ×1 Gaap
- Breakable wall containing MP Max Up
- Locked door leading to Screen 20, requiring Carpenter's Key
- Screen 14:
- Screen 15:
- Screen 16:
- ×2 Gusion, ×2 Ninja, ×1 Gaap
- Green chest containing Ofuda Talisman
- Screen 17:
- ×2 Ninja
- Screen 18:
- Blue chest containing Soy Sauce, Miso, Crimsonite, and/or Cypress
- Bookcase: The journal of an unnamed alchemist Vol. 11
- Screen 19:
- Zangetsu (boss), rewarding you with Zangetsuto
- Screen 20: