When approaching the Myconid encampment, and talking your way in Soverign Spaw will tell you to "Descend" so you can meet in person... Then to do so you have to climb UP to the top of the mushrooms...
Enemies become heavier when they die. When alive, they use a standard weight for their race (I.e. 75kg for humans) but when they die they then add the weight of their inventory. Which is not how physics works.
Killing Dror Ragzlin makes the ENTIRE Goblin Camp hostile. Even if you prevent anyone using the Wardrums, his death immediately makes everyone hostile even those outside the temple. Which makes no sense, as how would anyone not in the immediate vicinity know? (I mean, you can kill the other True Souls, Priestess Gut and Minthara just fine but Ragzlin is auto hostility)