999th Floor of Hell: I am the Strongest Mercenary

[Infinity + Decisive Killing + No Female Protagonist + No Saintly Virgin + Evolution and Mutation + Original System]

T virus, swallowed.

G virus, swallowed.

Blacklight virus, swallowed.

Black water alien, swallowed.

Veronica virus, swallowed.

Gamma-rayed mutagen, swallowed.

Vibranium skeleton, swallowed.

I don't care what you say, the blood looks good, just swallow it! !

……

999 levels of hell.

You are all earning points and exchanging them for abilities?

I have the perfect genes, all mutation factors are optimized to the best state, just swallow it and you're done!!

——

Yang Feng.

The top mercenary ever.

Cold, rational, cautious, tough and cruel.

He shed his last drop of blood on the battlefield, and after death he came to a strange hell apartment.

This is a place full of challenges and opportunities.

You will be given a second chance to achieve everything you desire.

Every day you fall deeper into hell.

Every day, you open the door to a new world.

Stay alive!!

Dedicated interesting story!!

We...are watching you...forever...forever...