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This is why I prefer to solo the first 6 levels
Because the level progression with a full party is just so slow. And the enemies can easily kill weak low-HP characters.
I find it much faster and easier to start with a barbarian or berserker and quickly solo up to 32 000 XP. Then add a full party. Then it is much more enjoyable playing with a full leveled party without constantly throwing dice if your character will survive or not throughout each single encounter in Chapters 1,2 or 3 because you see his HP is so low.