⚠️ MISSABLE: Staff of Royalty 20,000pts — sarcophagus beneath the Ancient City entrance ledge. The single most expensive treasure in the game.
Walkthrough
Two Dr. Salvadors (10,000pts between them; keep your distance with the shotgun-ground-knife routine). Descending spike room: shoot the ceiling lights, Flash the parasites. Mine cart: shoot the central switch, duck under the beams, shoot the track switch and the final QTE to jump off. Get the Stone of Sacrifice.