Objective #3: Clear Cave 3.
As you approach the end of the Cave 3, you will see The Whisperer taking over the minds of the soldiers around the group, including yourself. After a brief moment, Praxin and his group will be consumed by the Whisperer and will attack you. Take them out.
From this point on, you will no longer battle spiders but instead, a bunch of corrupted soldiers. Things can go crazy when a tank pulls an unnecessary mob. Make sure the healer pays attention to everyone’s health. Have the healer cast a health regeneration spell.
Dungeon Boss: The Whisperer
At the end of the dungeon, you will fight The Whisperer, the final boss of the Spindleclutch dungeon. This boss can be quite challenging, but as one of her attacks can wipe out an entire party. Once you know her mechanics, things will be easy!
One of the spells The Whisperer will cast is some sort of a hallucination spells that somewhat stuns the entire party. You will see spiders falling out from the ceiling.
Following the hallucination spell, The Whisperer usually follows that by sucking everyone on her and launching a red circle. As soon as you see her casting an AOE spell, immediately sprint. If you are slow in getting out from her devastating AOE attack, it can kill you.
Claim Your Reward: Talk to Guardian Sud-Hareem to end the quest and receive your reward.