Right now the fight is a bit buggy (at least for me). The drows only attack my team, which made the fight much more difficult than before. However, you can still win it without tricks such as bunches or high terrain (mainly because there is no comfortable place to climb).
The most important thing is a good team composition. Shadowheart + Lae'zel are able to kill most of the opponents together during a turn. If you additionally have a druid in your group, there is no opponent who can survive for more than 2 turns (unless you have extremely bad rng).
In addition, it is worth having Gale in your team along with the magic missile amulet to finish everything that ends up with low hp.
