chapter 11
Whirlwind's soul gem is on Chapter 17, Creepy Citadel. After the little goblin puzzle, there is a platform with two Gargantulas. Defeat them to open the gate and get the soul gem. Hope this helped.
Molekin mine chapter 18
you get his on the perilous Pasteur's level when you go threw the tech gate when you first get there
GET soul gem and unlock the soul gems upgrade
you find sunburns soul gem in his adventure packs level
Darklight krypt is where you find sunburns soul gem
Sorry I don't know but I know where Sunburns soul gem is it is in Dragon's Peak about 5 minutes into it lean of the island and there is a dragon waiting there to take u to his soul gem
When you get the cannon part of chapter 8 there is a platform behind you. Bring in your giant and lift the statue of kaos and use the portal.
you find the soul gem in darkwater cove but i dont know the exact place in the level
its on oilspill island
In Oilspill Island.