Those three fights are the “big ones” in act 1, probably as hard as the goblin camp, what level were you when you did them?
The easiest difficulty make combat a faceroll (which is a great way to experience the story, if that’s your primary goal); balanced makes you care about what level you are for the encounter, positioning, and your party make-up; Honour makes you think about terrain, party make-up, item use, damage types, and resource management.
Your ranged characters shouldn’t be close enough together that they can be hit with an AoE, and ideally, they are somewhere that gives advantage.
:::spoiler Party make up Shadowheart is mean and stupid, and she’s also easily replaced as long as anyone else in the part has “Guidance”. :::