Um, yeah I noticed the AC of lots of enemies were lowered. Backstab was removed, but the AC of stuff was lowered.
I did not have issues hitting enemies. The new combat AI is good, but still buggy. AI does some weird movements and triggers bunches of opportunity attacks for no apparent reason. They do not even move far or anywhere meaningful.
I was shocked at how easy encounters were, but they were not hard even before the changes.
Major bugs with Hunters Mark from AI. They tweak out.
