Only the final boss drops any loot, this way you can't come in, kill one boss, exit the encounter, and repeat to farm up artifacts. As a result, the final boss has it's loot turned way up to compensate for the others not having any.OK I finally bested the Roof Encounter
Kill all 4 Boss's and it's over, good luck LOL
@Kyronix the loot seems off for the boss's. Not one dropped anything until the final Boss and then he only dropped 10 items in which we shared. approx 2 items per person. Out of the 5 people who did this encounter we got 2 drops.
Was fun and frustrating!!