Because we all know this isn't in any way important to the story, right? I swear, if some of the people on this forum were in charge of the story, the comic would be six pages long and essentially be,
BELKAR: Why are we in this dungeon?
ROY: To kill-
ELAN: (summons plot exposition and explains the premise)
(The party walks through the next door where Xykon is waiting. They fight for a few pages and Xykon is killed along with Redcloak and the phylactery is destroyed)
ROY: Alright. Quest over. Let's go home.
See? Isn't that much better than the long rambling story full of useless subplots and pesky character development we've gotten?