There are three expected major themes to this work:
1) Protagonist reforms his body so that he's not out of shape or constantly in pain.
2) Reforming his giant physical mess of an environment into a functional heroic manufacturing setup.
3) His ongoing unpleasant mental experiences.

In other words, it's a grind.

Like any good story, there is plenty of room for progression.
He starts out with a bunch of psychological issues and a good few physical ones. Additionally, he has the means to live modestly but still to spend his hours in pursuit of the plot.
Unlike most good stories, ... well, a lot of things. But importantly, there is NO GUARANTEE of success. If he is unsuccessful, this project will be dropped. There is no room for fantastical plot armor in this story; His final saga could very well end in demoralized failure.

The "Game Elements" tag is for the personal status sheet, which is a fairly arbitrary documentation of his performance at various sets of exercises, and other discernible attributes.

The story uses a first person narrative.

The Gore / Sexual Content / Etc tags are there because the contents might discuss such things. Definitely not the focus of the story. MC usually doesn't use "Strong Language", at least at the beginning. But he might develop into such a character.
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I hope that someone out there wants to follow along!