The writer got mad when a goblin shoved Astarion off a cliff. It reminded me of when I had Karlach shove a goblin in lava, then a goblin ran up and shoved HER in the lava. I didn’t get mad; I took it as a learning moment: enemies can shove me back, so move away from the lava.
I ended up restarting (had made some decisions that were less than great) and was able to beat it pretty easy once I had someone able to output real dps (15-20 damage)
But yeah, I got lucky when I finally did win. I found it a lot easier than some of the other larger fights in the area.