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.
Crowning Moment of Funny: There's a lot of humour with Sarra finding out just who is in the Rising in the first book - including a scene in a bower where she nearly starts a brawl (she punched someone who offended her), and then realizes that who she thought was her target was actually someone completely different...
Newer Than They Think: Creation of Ladders is a long-forgotten art, thought lost since the Waste War - but a number of them are probably newer than that, some possibly only decades old.
The wraithenbeasts - and Anniyas becomes one and has a lot of fun being as vicious, cruel and horrific as she can be, including murdering a mother wildcat and then watching as her cubs starved to death.
What Anniyas did to Bard Falundir - cut out his tongue and sliced the tendons in each finger.
Glenin. Sweet baby Jesus, Glenin. Thinks nothing of mindraping and brutalizing her own family, puts a spell on her husband so he'll be devoted to her (and only her) - which gets him killed when he tries to follow her through a portal and gets ripped apart, tortures and murders Collan... It just never ends.
Tearjerker: What happens after Cailet is brutalized by Glenin - her own sister.
Gorynel Desse's death - actually, pretty much all the deaths, especially Collan's.