Ictus

DING!!

[You killed a Level 3 Mutant Zombie for the first time!]
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DING!!

[You have crossed the limit of humanity! Entering the mutation stage!]
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DING!!

[Congratulations, user! You are now a being beyond human beings!]
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Being a good person cost him his life. When death sent him back, he vowed to take revenge and finish the job. 

Behind the icy cold that grips the world and the red light that fills the sky day and night, he must defy the zombie apocalypse. 

A safe house, unlimited food and drink, every conceivable weapon and a system to help him... But he has only two things on his mind: Survival and revenge.

A Regressor's Guide to the Frozen Apocalypse

Congratulations user, the only multifunctional system in the universe is here to help you again. Have you ever thought? Maybe all humans have viruses, perhaps some are stronger than others.

What if you could control these viruses...what would happen then? This is where the situation comes to the fore, since the beginning of history, different names have been given to what others could not do. Geniuses, outstanding leaders and more.

And in this fallen world, you have called them [users]!

Now you have managed to reach the EXACT end of human limits, now you have to aim to rise above humanity while managing to maintain your humanity!

You have reached Level 100 and mutation is now your goal.

This is exactly the path you must take for your revenge. Remember, dear user, you were not chosen for nothing].

Mutation (1)