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