Here is the full list of all 20 Saving Grace achievements.
You Started "Saving Grace!"
Kidnapped.
Obtained: Pistol.
Successfully Created the Demon Portal.
The Scream must of scared you.
Obtained: AKM.
Obtained: RPG!
You killed Evil Itself.
Killed Lucifer with the RPG!
You took the demon crown.
Exploring The Past.
Infected.
The Demons Ascend.
The Dream World.
Trapped.
Sold Your Soul.
Teddy?
Almost Like It's Your Birthday.
Blasted A Full Wave Of Demons!
It's best served cold...