On a scale of 'attempted privacy invasions/total posts on the internet'?

No, that the death threat would result in any harms to me.

Can I ask what the unexpected ones were?

No.

What did they intend to do with personal information? Just contact real life people and be rude about you? I'd guess if you have a good real life reputation already that would be ineffective.

You'd be surprised. One Wikipedia admin, Kate IIRC, quit Wikipedia entirely because she thought her stalkers like Daniel Brandt could get her fired. Another, PhilWelch IIRC (who's a LWer now), had some unfortunate encounters with the police, courtesy of his stalkers, demonstrating that even if they can't get you fired they can do a distressing amount remotely.