This guy is soloable as BST/NIN. I just solod the Oilycheeks goblin and this guy this past weekend. Just pet pull him to the electrumcap (funguar) area and avoid the quadavs that patrol that area. Watch out for his AOE spells, especially Sleepga, and also avoid the Tantara. You don't want to be caught not being able to refresh shadows or not being able to charm your next pet. (No drops.)