Explorer/marshdweller is completely fine if you don't plan to PK. The build has excellent survivability for exploration and PvE if that's what you're looking for. Ranking is a breeze, especially if neutral for more group options. Ranking to hero completely alone is also a fine option, if slow at times (30-35 and 43+). For extra cool points, go evil Scarabite and do rank completely alone, hating all the other people, albeit you won't kill many. Pursuit w/o insects is meh.