This is Gonna Hurt by A.I. Nasser

Philip is terribly upset.

Things have not been going well. He lost his job, his home, and his girlfriend is sleeping with his best friend. Life just doesn’t seem worthwhile anymore.

But he has a plan. He will bring suffering to every single person who hurt him. Every cruel act visited upon him will be met with grave retribution.

Revenge has never been more horrifying.