There is a bug, whenever I talk to Keylessa for the second time. Whenever I get to the sex scene there is a bug that doesn't show the sex scene no matter what I did. Just thought I'd let you know
The bandits are not inside the Yin Tower, but in front of it. Make sure you're not at the Yang Tower by mistake.
They only appear there after you have the gem from Thremten.
1. Tajurata Fort -> Second floor -> Shelf in the top left. (unlocks gem 3)
2. Jewelry Store in Thremten (unlocks gem 4)
3. Magic store in Witton (unlocks gem 5)
4. Yin Tower otuside (Fight against some bandits)
5. Diminus Castle (Guy in a small house) 6. House of the priester in Old Ashton (requires that you have all 5 other gems first and then talk with Aiyana.)