Hi, starting this thread for those who found solutions to LF2 quests in LF3.
So far I did:
Alchemy contest - we did this in LF2, but Wendala can now report success at the Mage Guild
Oxuralis - we find it in the Order temple (near the Lunar key), Xander can report success once you get control of him (after Wendala)
Skohar - you get him in Uba's treasure room, unable to go to Undead Guild as yet
Sleeping Girl near palace (not a quest, strictly speaking, but ...) - speak to her with Wendala and she wakes up! Random was right - this is one lazy girl ...
If you find any more, please post in this thread.