From level 10 I sat in that slime tree for days on days level to like 20 or 25. Then I'd sit in Kurning? Don't remember the name, the city for the thieves and the awesome music. I'd sit out there waiting for PQs. Made, I always became a leader because I got so good at getting in. I was just really fast by tracking people inside, and I lied about having an auto clicker so I'd get the strongest people in my group.
Yeah, level 30 was hardcore.
Now with the new classes, there is that magic dude who hits everything on the map. I got to level 30 with him in less than 2 hours.