Here is the full list of all 9 Stained achievements.
Has a disarming disposition
Cleaves enemies with minimum effort
Smashed Clock boss without dying single time. You have become the real stained smasher.
Push Enemies away by shattering near them
Regenerate health over time
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