Here is the full list of all 14 Hellblusser achievements.
Obtain 20 blessings.
Obtain the golden blade.
Loop back to the sewer.
Obtain 10 blessings.
Obtain the cloak of sadness, drain blade, and become a drainer.
Eat a donut while being hungry.
Obtain 5 blessings.
Extinguish the hell with no blessings obtained.
Enter hell.
Enter the dungeon.
Collect 50 tears.
Collect 50 coins.
Complete a level with full health.
Complete a level with full fire.