Killing Gods and Demons

In the year 2100, humanity has been in constant turmoil for half a century. Ever since the system and gods appeared, human greed and malice was found everywhere. Alex Woodly is a young man who has lost everything, so he curses the so-called "gods". Angry that a mortal insulted them, they send him to the bottom of the underworld. Wanting to increase his suffering, they send his real body. Alex decides to get revenge no matter the cost, even if it means abandoning what makes him human. Will he die in the underworld and suffer eternal torture, or will he return and flip the entire world on it's head...