I used to solo level 6 maps all the time with just a bard tmapper - Peace/Provoke. I find that I can no longer solo with that template because they make the spawn stay near the trunk now. I used to kill off the initial spawn with provo and peace, lure away the remaining 1 left, then provo stuff onto it when it popped, etc until there was only one thing left and the trunk was empty.
Now that template can't solo kill an Ancient Wyrm and the spawn can only go a screen or so away from the chest so I can't empty the chest with that template.
I'm sure soloing with a single character/account is still an option, just a matter of the right template.