Here is the full list of all 19 Shrouded in Sanity achievements.
Harbinger of things to come...
Visions from the new world.
Terrible idea!
Had enough yet?
May your bloodthirst be satiated...
True conclusion...
Bad idea...
Congratulations, well done!
Challenge accepted
Close to the truth.
Unfit to rule. Doomed to repeat it.
Nothing is ever free.
Subdued the 4th Knight.
Subdued the 2nd Knight.
Subdued the 1st Knight.
Subdued the 3rd Knight.
Self defence...
First time for everything...
Not in the position to negotiate.