best tactick for epic war is to have more range attacks using units than fighting hand to hand i mean enamys will lose alot units even coming near you and your fighters like frost giants will defend your archers so you will do more dmg and save more hp
when you start playing chose swords becouse later you will get crazy op sword cald assassin and if you will chose to upgrade and play with swords you will do more dmg you can upgrade dmg that weapion does with skills and by upgrading it with crystals
This game is quite hard if you aren't playing with a mage from burning hill and if you don't know how to use clan special spells , but you need only two and they are ( IS )( AP ) , you also need ( AP ) , ( C ) from normal spels , but you need to have them later.