For a detailed visual guide, refer to these community-created video walkthroughs: Walkthrough Part 1 (Starting the descent) Walkthrough Part 2 (Middle chambers) Legacy 2 Final Ending Walkthrough (The pyramid's core) If you need it, here is a breakdown of a specific puzzle like the Zodiac clock or the music box.
Press only the buttons illuminated by the light to reveal stairs on the right. Room 15: The Boiler Room legacy 2 ancient curse walkthrough text