You guys are right. The quest text doesn't match what you actually have to do. They updated the text quest without actually updating the quest. This is the original quest line and it works:
Part I
1. Subjugate the feral creatures of Moon Refuge and collect Banestones
2. Defeat Jinsoyun, the Dark Emissary, at Heaven's Mandate
3. Defeat Winter Mane at Cold Storage
4. Defeat the Searstrike Sisters at Mushin's Tower - 16F
Part II
1. Defeat Volberus in the Starstone Mines
2. Defeat Jurupo in Hollow's Heart
3. Defeat Numok in the Drowning Deeps
4. Defeat Amara in the Ransacked Treasury
5. Defeat Rukesh in the Sandstorm Temple