We’ve turned into a Hive, things are getting serious.

Don't believe in such hype; the numbers were inflated for some reason. Just remember that you have your own mind, and don't pay attention to nonsense. The worst-case scenario is some illness, and that's why he died; otherwise, he might have lived longer. But what's the point of getting 260 points for two weeks? You won't even have time to enjoy it.
As for the bandits, I can give them this advice: just be yourself, go in without any ulterior motives, and give them a beating. But I haven't played the first Gothic game if you're talking about it; I've only played the second and Elex. You can also lure them out to the guards.

It's very possible. If I take a precise ruler and fly through you at a speed close to c (moving vertically), you can use that ruler to measure yourself and find that you're 260 or even more, if needed.

And if you do that from a black hole, I'll also "live" for a hundred trillion years like that cybernetic being. Or vice versa?