Here is the full list of all 18 Hell Runner achievements.
Finish First Hell
Finish Second Hell
Finish Third Hell
Finish Forth Hell
Finish Fifth Hell
Finish Sixth Hell
Finish Seventh Hell
Finish Eighth Hell
Finish Last Hell
Finish First Underground
Finish Second Underground
Finish Third Underground
Finish Forth Underground
Finish Fifth Underground
Finish Sixth Underground
Finish Seventh Underground
Finish Eighth Underground
Finish Last Underground