Apparently you can get a note in the river cave in the google doc that unlock a dialog to gunnar, where is it?
For Bernard, I don't have heart with him yet, but be sure to check sometimes his dialogues ^^ And check the google docs, they might help a bit, I think.
For the note, it should be when you enter the cave in the river bank, you find it automatically.
i think somewhere behind succubus, where you got key to prison