Brother Samael's quest gives xp for abandoning without completing.
Possibly another bug: after all spawns were cleared from the area, the locked door at the end did not allow access to the final chamber. It gave the "Who disturbs ... " etc. conversation. Elkhan dropped no key or anything that might serve as a token to trigger a different conversation. The journal entry says something about vanquishing a mighty warrior and accessing the sanctified chambers, xp reward from Samael is the same as when abandoned.
Possibly another bug: after all spawns were cleared from the area, the locked door at the end did not allow access to the final chamber. It gave the "Who disturbs ... " etc. conversation. Elkhan dropped no key or anything that might serve as a token to trigger a different conversation. The journal entry says something about vanquishing a mighty warrior and accessing the sanctified chambers, xp reward from Samael is the same as when abandoned.