Yeah it's a tough fight. My first time with the encounter I just went into the room and got spotted by a phase spider below me. Opening shot from the matriarch was a crit on Wyll that KO'd him. After a few rounds fight was looking grim until Gale cast a thunderwave that tossed the matriarch into the pit to the underdark! Had a good laugh, healed up then got curious if she had treasure on her and sent Wyll's imp into the hole to find out. Game crashed and I hadn't saved after winning the fight (EA woes).
