
Suggestion: In the Valkyrie, think long and hard about what troops you want to upgrade first. I didn't know what I was doing when I set it up and made scouts my 6th level warrior, meaning I'm 99% sure I'll never be a good scout because it'll cost waaaaaaayyyyy too much to upgrade.
A lot of people (like myself) chose melee first because their upgrades are first in the T6 and T7 trees of the Oracle.
I have Killer class as my main with a secondary of Siege. They compliment each other. As my Killers are "maxed" for now as well as my Siege I've started Melee as the third on the list. I also have been putting a few and I mean very few upgrades on Horsemen as I use those every now and then for the speed to tiles. It will be awhile before I can do anymore upgrades on either Killer or Siege so will continue to up my Melee and possibly do a few for Calvary and Scouts. I've been compensating for my Scouts being so weak by training a LOT of them lol mostly t-1's and t-6's.