My experience thus far:
Progression: Heritage Hill
Level 7 Pale Elf Rogue
Max Might
Max Dex
8 Stealth
5 Mechanics
I have not had many problems outside of enemies who summon additionals, i.e. Banshee. I do not believe I will get further as a lot of encounters begin with unavoidable combat due to dialogue. My damage has seemed to plateau as weapons are not dealing damage that scales with level. I have used the same dagger for four levels. The best way I can forsee myself progressing is using an arbalest/crossbow combo to sneak, do massive damage, and use Shadowing Beyond to escape.
I really, really, want to continue soloing but I have dumped hours for certain encounters and do not believe this game will be fulfilling if I cannot smash through enemies like dragons.
It was a fun journey.