I haven’t read Forth Wing yet, but it’s on my list, and I haven’t heard of A Song of Achilles, but I’ll look into that one and get back to you!
The Crowns of Nyaxia were good, in that I enjoyed the first one a lot, but felt that the second one felt flat. I liked the writing style and the characters and world building was good. I also enjoyed the way the MC was torn between the love for her father and her hatred of the thibgs he did. SPOILERS The second book was basically a rehash of the first in terms of romance, which was frustrating and boring to me. The author reset their relationship back to enemies-to-lovers, so I felt there wasn’t any growth between them, just a repeat of the same issues they conquered in the first book. I also felt like every fight scene up until the end was the same in terms of gravity. It got old quick.
ACOTAR was also great, imo. A bit slow, but I like Maas’s writing style, she’s got a good blend of internal thoughts and exterior actions, and all her characters in that series are incredibly distinct. I also enjoyed her version of the whole “trials” trope, even though the riddle was easy to guess. I will admit though, I love the second and third books over the first. They pick up the pace and yeah, im a Rhys fan through and through. I like to pretend books four and five dont exsist, though. :) SPOILERS I had issues with the ending of book 3. People almost dying but then coming back to life is fine if it’s once, but Mass keeps them all alive. Oh well.