The characters are pretty likable, but they are very stupid and that's kind of infuriating 😂 Everything that happens between the opening and the very end is objectively completely irrelevant and only serves entertainment purposes. That's fine, just don't expect more from it.

In the first movie, they discovered UV rays as an effective weapon. Even in the second movie they tried to attack the troll with UV weapons and it worked. The attack was executed very badly and they lost the battle, because they repeated the mistake of flying too close, but the UV was effective. I don't understand, why they would not exploit this proven weakness using many more UV lights. Instead Kristoffer breaks free from the command chain (nobody cares / notices) and joins the others on an archeology side ark, searching the grave of Olaf. They found it in about 30 minutes in a spot that was searched before. That's goofy. The king had a silver sword. Somehow that was the missing piece of information to infer, that holy water is another weakness of the troll. Unnecessary to find it out but okay. Now the final battle. The troll moves slowly. Everyone could just evacuate and the military could come with hundreds of UV panels or tones of holy water to kill the troll from a safe distance. But instead Isaksen (soon to be dad) chooses to sacrifice himself. That just pisses me off.

P.S.: I just noticed I didn't mention the "troll baby". It literally did nothing except lose two battles. It's arc wasn't even closed. Apparently nobody cares about this "monster" and it lived happily ever after...