First off welcome to sleeper's tomb! There are six items you need in here to complete the progression.
- Proof of the Progenitor's End
- Proof of Ventani's Defeat
- Proof of Tukaarak's Defeat
- Proof of Nanzata's Defeat
- Proof of Hraashna's Defeat
- The Arbiter's Heart
Pretty much all tank, and spank. Watch out for Kerafyrm he hits fast, and hard.