Here is the full list of all 11 Bloody Hell achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Finish the game on His day of rest.
Create a Satanic Star.
Defeat a former ally.
Defeat Satan.
Defeat the former ruler of all.
Be halfway in finding all chickens.
Collect all 18 Chickens.
Unlock all Blood Vials.
Defeat Maggy.
Defeat Pork Chop.
Go to Hell. Literally.