Could you imagine finishing World of Warcraft (hitting the highest possible level) without killing a single thing? It is hard to imagine, but it is apparently very possible to do. Incredibly hard? For sure. Impossible? No. According to one player named Everbloom he managed to hit level 85 without killing a single creature. How did he accomplish such an arduous task, you ask?
He claims that he spent the last five months picking herbs, digging up bones, exploring the wilderness of Azeroth, and doing all manner of tedious tasks to gain experience. He did this by taking advantage of the Professions system, gaining small amounts of experience for advancing in various extracurricular activities.
Below is his announcement, taken verbatim from the Battle.net forums: