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