Here is the full list of all 13 Soul In the Chamber achievements.
Beat the Bound by a Bullet
Beat the Bound by a Bullet with 3 Stars
Beat the Ruins of Khal
Beat the Ruins of Khal 3 stars
Beat the Hall of the Lost
Beat the Hall of the Lost 3 stars
Beat the Flight of the Emperor
Beat the Flight of the Emperor with 3 stars
Beat the Into the dying moon
Beat the Into the dying moon 3 stars
Beat the The Emperors Word
Beat the The Emperors Word with 3 stars
Collect all 15 Artifacts