Ok - having slowly been leveling a Cleric up, using PWC and basically tanking 1-~24 was not bad. Up to ~34 things kept slowing down and nuking did more dmg and by ~39 I felt I pretty much had to be a wizard aside from skills ups or finishing mobs off.
I say that because Shaman would be infinitely better at doing that with the tools you have. Maybe I am repeating what others have said in the thread but you will have very little down time doing this:
- Buff STR
Slow
Melee
Sit after fight if needed or heal
Unlike cleric that keeps getting worse you eventually add
Haste
Better slow
Regen
Pet
I only ever played my Shaman duo, but I would wager with mild upgrades a Shaman could easily melee up to 45+ and do a mix of melee/dot/root in and out with pet to low 50s.