korniatm: The Aderin side still makes no sense to me
(if you paid attention during dialogue and cutscenes it would)
korniatm: The Witcher is in town looking for the kingslayer/my girlfriend
Yes. But also to do two other things...
1) Restore your memory
2) Assisting Iorveth in a noble ideal or travelling with him because he leaves for Aedirn first, that becomes helping out your friends Zoltan, Yarpen etc, as explained in dialogue.
korniatm: He agrees to a bunch of fetch quests to find the kingslayer/lift the curse (not sure how the curse made its way in there)
This is explained in the cutscenes from prelude to war, and in dialogue with either Dethmold or Phillipa. Sabrina Glevissig cast it. Cedric prophesised that you would need to lift it to restore your memory.
korniatm: He and the hot polish girl are defending the walls of helms deep from Kedwen
beacuase he's not a dick...
korniatm: The second one is worse but they both are lacking in good motivation. In both cases why doesn't he just find a different place to cross the river?
He crosses the river to look for Triss as soon as you'd like him too, he crosses the river to look for the kingslayer as soon as he can. He doesn't want to abandon the river, he wants to lift the curse, it's what witchers do and it helps restore his memory. From there his goal becomes a pursuit of both in Loc Moine.
I really don't understand how this can even really seem like fetch quests to you. The only real fetch quest is the immortelle, and even then you have your dwarven friends to accompany you. The quests with royal blood, the dun banner, and Triss are very story heavy, let alone the succubus etc.
Chapter 1 was maybe a little more immersive I agree, but I just don't understand how you can not like Chapter 2.