I found this battle to be just super tedious.
It was quite protracted. Eventual strategy: sneak characters out of crevice onto balcony. Snipe. Hide. Wait. For weeks. Then repeat.
Edit: oh yeah, nearly forgot, I'd previously made a handy collection of exploding barrels up by the very flammable pub, so I had Gale sit there and magically teleport them to the other three who would occasionally lob one onto the ground below for fun and lol.
