Here is the full list of all 16 Lust Dungeon achievements.
Big, green and ugly
Korin was taken and all hope was lost
And they reunited!
Lux needed to rest and heal her wounds
Gray, slow and slimey!
Dead, fleshy and angry!
They completed each other
Killing zombies as Korin
.. and then Korin needed to save Lux
Yummy!
The benefits of magic
What she did before they met
They were like chalk and cheese
Lux didn't care her clothes is getting ripped off...
Lux was eager, Korin was all about delaying
Beautiful dresses