I am still wondering, how big a jump Arya made to go over White walkers, wights and covering some distance to land in hands of Night King.
The battle was dull overall, no tension at all, everyone important was safe.
That said I would have liked if Night King was killed in duel with multiple characters, Jon, Arya, Jaimie, Brienne perhaps.
Among other nitpicks, all the other white walkers did was standing behind Night King. They should have led charge.
But then they have made walkers very weak/vulnerable. All you gotta do is basically touch them with dragon glass or valeryin steel. They broke like glass with stone.
Wights were bigger threat than Walkers.