>>535996781
There is some evil reactivity in BG2, but don't expect much. It mostly boils down to a handful of evil quests. As with BG3, the game favors a good-aligned playthrough and good-aligned classes. Being truly evil is more of an afterthought. The more important thing to keep in mind is that some companions are incompatible with each other, often based on alignment differences. In extreme cases, this might escalate into a fight and losing one companion.