My goal from the start was to eventually transition to a republic and build a trading state that encompasses the Baltic and Scandinavia. The biggest challenge is the succession system, but that can be dealt with by fighting a few wars every time after succession (a hassle but it doesn't destroy your state). Things went really smoothly as a tribal, large armies and I easily defeated the neighbours. I started a game as Pomeranian tribal in the early middle ages bookmark (Charlemagne).
