You want proof that Joana’s guide works for other classes? Here’s your cookie. I played for exactly 3 hours since my log-off yesterday morning as 22% of level 9. Frostr is sitting at 14% of the way through level 13 with 5h 54m of /played time.
I died several times attempting Powering out Defenses and finally completed it 2-3 levels below what should be considered reasonable for a solo mage as a level 10. It took some real strategy and everything I had. First, I wanded the initial 3 to get them to come my way, and then I Frost Nova’d them in place and started to Fire Blast and wand them. By then, the next 3 had shown up, so I got their attention and started running around the rune.
I had to look up who was the quest-giver for my level 10 quest and made it work out with the other quests in the guide and finished it sometime around level 11. This morning, I completed every last quest in the starting area, Ruins of Silvermoon, and Eversong Woods and picked up all of the available quests in Tranquilien to start my Ghostlands adventures.