Here is the full list of all 11 Soulshard achievements.
Use the key to open the door and proceed
Escape the saw alive
Scare away a crow
Ascend on a rotating platform
Survive the blades
Escape the boss's clutches and survive!
Confront death for the first time
Overcome death 5 times
Overcome death 15 times
Push a cart with a ladder on top
Escape the spiked ball alive