Following the apocalypse a wayward mid-level servant of the Devil becomes stranded on Earth and is paired with a closet atheist twenty-something from a mormon family and is tasked to collect enough souls to return to Hell.

Sounds like potential for a buddy movie comedy in an outlandish almost other worldly setting.

The logline has an unlikely MC a devil’s servant, it has even got a buddy the atheist Mormon and he has a task. But no clear goal or AN also the logline has too many words unrelated to the story.

Try opening with the MC and then position him in a post apocalypse world and make the task a do or die. Also try and reduce the MC’s description a bit to a more concise and potent description that will tell us a bit more about the character and comic nature of the story.

Here is my suggestion it?s not much but I think more in the direction the logline needs to go.

The devil’s PA is thrown on a post apocalypse earth tasked with soul collection. He is aided by an atheist Mormon to out collect another devil’s servant before being allowed back in hell.