It’s true, pushed to lev 20 then started killing NPCs and exploring, at lev 40 just sat up north and kept murdering and thrall taking. It’s not the first time its been done. Someone else on my server did it faster than me. if you haven’t figured out how to do it then keep at it.
Prior to release you could do it in 2-3 days using a spear in EA.
Like this… 10-15 npcs at a time pulled and killed.
Now its about 5-8 due to how weapons work since they have been nerfed and the mechanics in fighting have changed.