When he fights and dies can’t skip it, on Necro if that matters.
Some quests’cutscenes show the UI indicator for how to skip them, some do not. The consistency I found was: left-click > it shows the UI telling you what button to press to skip > press Esc > it skips and you can resume playing.
During some quests/cutscenes this wasn’t working - clicking or pressing Esc did nothing, however if I Alt-Tabbed to another application and then Alt-Tab back to the game, it then allowed to skip using left-click > Esc. 11