This second season was very much well worth it!
While I do have to address a few points that clearly need to be pointed at. I can't say this season has many flaws.
I see there are many complaining about lazy writing, well I think it's more a problem of cut content and specific scenes making no sense because of that. It could have used a bit more care in that department.
You could address the fact that for some reason the group didn't attack specific points that would make more sense, like in episode 4 where they attack the shield instead of the ground below it which would make the castle crumble and fall. Or the fact that there was never any use in siege weapons like siege towers, siege rams or siege ladders. They just run at the front gate which is the worst thing you could do. Another major issue is the castles that are very clearly fantasy and not remotely realistic. Yet I don't really see this should weigh too heavily.
Also the fact that both Ars as Licia are 13 years old and marrying in this season will probably be picked up on. Although, let's be perfectly fair, in a medieval type setting and just before a war you can expect such things to happen. In the medieval era in our own timeline you do see people marry WAY younger as they didn't really got to age 40 or 50. So yes you marry earlier then we do today. So historically speaking this is technically not wrong. Even if modern ways of thinking would be way different. It's not like you get to see them consume their marriage.
It's a good story, don't let the people that only watched a few episodes make you believe differently, these individuals clearly have no sense of what a good story is. Specially if you include the ending of episode 12 which was really touching in a way. I'd like to highly recommend this season.