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