I'm pretty sure he hasn't... I definitely would have marked that on Malakai's sheet, but there's no mention of XP in his tracking section for this adventure.
Fight finished here. Last status report here. (Foes were a dwarf, a Dragonborn, an Elf, the Human, a Drow and 5 scrub minions).
There was a bit of probing around a door. Not really a skill challenge, though.
Loot: Malakai did some wish-list based wheeling and dealing and Artemis got some magic chain. Still an unclaimed cloak floating about (Veteran's Chain +2 & a Cloak of Distortion +2).