Here is the full list of all 9 Stained achievements.
Regenerate health over time
Smashed Clock boss without dying single time. You have become the real stained smasher.
Cleaves enemies with minimum effort
Has a disarming disposition
Push Enemies away by shattering near them
A weight less to activate pully
Key for the giant bat door
Smash glass creature with sound waves
You are the true heir of this stained kingdom