I think that the best part of all this fight was the faces of that knight... like, the dude knows he will get pain... he just does not know from where:
The guy he push off a cliff that just killed the monster that the best adventurer could not beat
Said best adventurer and childhood friend that is obsessed with the guy he pushed off a cliff
The girl that has declared a lot of times that the guy he pushed off a cliff is a very important person to her and also is a monster in terms of power level.