How the hell does MC cheat work?

First the MC doesn't have system. His eyes can project hologram like window to check his own condition, create a map, take a picture or record event. I mean the eyes from the start is a recording device for a God.

So no mission or store.

Now how the Item Upgrade Work?

First each upgrade take part of his soul, lucky he have large amount of them and they regenerate faster than what it takes for an upgrade.

Just imagine Kirito, standing still like he don't take a single damage. He is an Evil God of course his soul is big and strong.

Look Death from Soul eater, his soul is big enough to cover the whole death city.

If there is someone who is confused than I am sorry.

You don't need to think hard about it, but if anyone feel that the skill part is unnecessary than I will erase it. I don't want anyone to hate something than I made because of my boredom.