This guide probably already exist, just putting this out there since the search function is down and I just made a new mule. So yes it has been tested already, correct me if I'm wrong. For those who don't know, you can find Staff Sergeant Charlie in Orbis. You will gain 500 experience points for every 100 of the same item you exchanged, and you can redo this quest as many times as you like. Full Set Inventory Worth Of Zombie Tooth (96 Sets Of 200) Level: 10 ~ 29 18 Sets Used At Level: 29 ~ 30 Total Used To Get To Level 30: 114 Sets Of Zombie Tooth Hope this helps
This Zombie teeth process is painful af = ] ] click click click click, i got my mule to lv 25 and stopped
You can start teethleveling as soon as you can go to Orbis, which is at lvl 7. When I lvled from lvl 7 to 25 I needed 9500 teeth in total