Arc, gld, mrd, pug...

[vax]

Marauder is pretty good for soloing (high damage, lots of HP and selfheal). Also has a combo that works from the front. It's also pretty funny when you stand in the middle of huge amount of mobs and hit them nonstop with that counter-attack which is aoe (forgot the name xD).

I think every class has a combo that works in front of the target, then another that works from behind and at left and right from the target. Maybe the only that avoid this is archer but gla, mrd, lnc and pgl work this way.