All these closed doors

[Johan]

I can't find the keys for several doors in chapter II , in the port town:
next to the barracks of kendrick is a door that needs a proper key, which quest opens it
in Derbiab's cave are several barracks that won't budge, can you open them at all?
In town again are several barns that won't open
also in port LLast is some kind of mausoleum that won't open
And yet another question : in Port Llast there is this annoying kid that wants to go on adventure with you but always ends up not talking to you anymore. I tried wasting the brad but she's invulnerable. Am i missing something or is she there with the sole purpose of annoying you?

[Xandax]

Not all doors can be opened by the way. So some locked doors will always remain locked. I think many of the ones you mention can't be opened (Barracks in the cave, barns and mausoleum)

As for the "kid" in question - she is just there to annoy you

[Fiberfar]

The kid at Port Llast was killable before one of the updates.. she gave more xp than many other bosses in the game.