Perhaps. I did have two goblin shamans throwing two lightning bolts at my whole party once on the way to the third gem (along with killing their comrades that engaged my party in melee), which was quite a trip.
I suspect their supposed next project taking place in the same world is going to significantly up the base difficulty, because a lot of people have been saying that the latter half of the game has been too easy (except for a certain stretch where resting is apparently difficult).
If the AI doesn't have the sense to avoid targeting its own side then its a serious problem. 90% of the problem with the difficulty is the bad AI.
And yes, the most challenging thing they had was a waves-of-enemies survival encounter, but even then I didn't lose anyone. The actual endgame fight is such a huge letdown.
But hand to God, they should not have released this game with that bad AI. What's the point of faithfully crafting a authentic 5e rule system and not provide a good encounter?
