itch.io

Finding Korg(green orc), is pretty early on I believe. you find him in Victoria's cave. For Logan's scene not too sure either, probably in bottom Logan path where you send him to the bandits.

I take it you're talking about Zoroj's CG art of Logan getting dicked by Barrel? That's after Logan has returned from Bandit's Camp (when you saw he was getting gangbanged by them all). 

You need to talk to him during the day about his visit at their camp and from then on you can always find that moment every evening/night when you visit sawmill.