Ty for the advice^^
Thetis i only got recently during the last Nanaly boost. There i got her along with Berna and was wondering if she is a got valk, which u already answered^^
About Lyla im not so sure, if i look alone at her stats yeah she is better except for a bit weaker def, but Imelia can boost her atk/def quite stronk which i fine sometimes very useful :s
About Anya and Shizuka i wasnt that sure about using since Anya got quite high UC and i never rly used Samurais before since i thought HA are way better in terms auf doing the "tank" job.

Also just besides the fact, would it possible for me to beat any of the G Tier maps if i plan out some specific units, that means if its worth farming G tier instead of X tier.
Also as earlier mentioned i try to finish the challenge missions and im stuck and Giants & Dwarfs 2