These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The Fionavar Tapestry
Cliché Storm: Every standard high fantasy trope you can name, most played straight. Kay has said he wrote the books as a thrown gauntlet to those who he felt were bastardizing Tolkien's work by misusing the tropes.
So many, let's start with the top one. In the third book Lancelot battles one of the oldest creatures in the world for a whole night and never wavers during the battle! Surely he couldn't win but when he somehow wields the beast's own hammer he finally kills it! God damn it's hard to top that!
Diarmund comes close near the end.
Coll commanding his ship in a very violent storm.
Gereint sending his spirit out to help forge a link between Paul, the earth, and Liranan god of the sea at a critical moment.
Many, both for readers and in The Verse. (Characters will often weep when it would be the normal human response, unlike many works of the genre.) The Go Mad from the Revelation aversion is one notable example; learning the reason Paul wants to die is another.
The death of Kevin Laine
The scene that reveals what happened to Paul Schafer's fiancee, Rachel: they were driving home when she told him she was in love with someone else. Then their car crashed. She died, and he blames himself, feeling that he subconsciously rolled the car as an act of revenge.
Rakoth raping and trying to break Jennifer Lowe as well as the fate of her being Gwen and Arthur and Lancelot being her great loves
Dave Martinjuk learns that he has to leave Fionavar despite feeling like he belongs there. However he's learned a lot about himself and finds the courage to ask Kim out in the end.