This psychopath is too strong

The abyss murmured, wandering strangely.
In this cruel and strange world, human beings have been completely defeated until the arrival of that man...
This is a story of a severely mentally ill patient who seeks longevity in a strange world, establishes a fairy gate, and completely transforms the abyss ecological chain.
This book is also known as "Force Immortal Cultivation in a Weird World", "The Devil (Protagonist) Comes to the Abyss", "Nightmare of All Races"
Protagonist faction:
The Human Perspective: Between Chaotic Neutrality and Chaotic Good
Alien Perspective: Chaos Evil
Key words: alien hegemony, rise of human race, savior, invincible