Ranger build for Dungeons
Do you really mean “Soloing” the 5-man dungeons? Well, if yes, believe that it’s very hard and time consuming, also I’m not sure if it’s even possible for a ranger.
Dungeons are designed to be played with 4 other people. Solo is possible on a ranger (and every other profession) for most of the dungeons, but don’t worry about it for right now. You won’t be able to do it anytime soon and you’ll be incredibly frustrated if you try.
It’s not harder on a ranger, just much slower than classes like Warrior/Thief/Guardian because of damage modfiers in other wonky trait lines, and pet dies quickly. Arah is the most commonly soloed dungeon. I’ve seen Ranger solo CM story as well.
Arah Path 2 Ranger Solo Post Patch 7/1/14
http://www.youtube.com/watch?v=AkM7qYbhuU4
Arah path 2 Solo
http://www.youtube.com/watch?v=fF4GHxEfIR0
Ranger Solo – Giganticus Lupicus 9:22
http://www.youtube.com/watch?v=iBwpvrbN2Ro
The build is usually 4/5/5/0/0, full zerk + Ranger/Scholar runes, Force + Slaying/Energy Sigils. For most bosses you can position your tanky pet like bear to tank boss damage and just sword afk behind it.
I doubt the guy is ready to solo Arah after playing the game for 3 days.