The final duel with Zenos was stunning and I regret I didn’t fully recorded it on my PC.
Especially the last sequence with a fist fight that can’t be viewed at the inn (with the unending journey book).

There may be also people who want to fight Venat again.

I believe this should be available with a New Game+ but I never used the feature, can you select a specific quest or do you have to redo a whole questchain ?