What I meant with "2 weeks playing time, doing all what other players did and adding some of my creativity to it" is that I undertook extensive research on various forums etc to find all "evil deeds" that granted the Villain Tag to other players; I performed all these actions plus everything else I could come up to with my imagination.

I limited my endeavor on Fort Joy section because it is reported to be possible and for Role Playing purposes.
Hope all these hours invested will help you guys to find out what's the issue.