Zevna's a legend. I really love how creative many people are when it comes to finding their own objectives within what's on offer on Shartak. I'm still kind of settling with most of my characters.
Since Simon changed it so that people with x kills and 0 deaths show up properly on the kills per death leaderboards, I think I might have one of my newer peaceful characters kill one person (to attract attention to well, their existence), then run out into the wilds and see how long I can go without being killed by anyone else (or attrition). That seems kind of fun!
There was a player, Krampus, that most people might've missed who did something similar. They got to Level 41 on a Shaman with no deaths. Unfortunately they recently took a random environment death to a Tiger, but that's a really impressive streak, hehe.
In terms of grinding quietly, the underground pool next to the tunnel which spawns tonnes of rats is probably a good place to do it. The pool tunnel is really safe, the worst that can happen while you're asleep is being gnawed on a little by one rat, but I've never seen any big packs get into there.