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