Elithen Pikemen unlock at Castle LVL. 10
Basically a blend between Swordsmen and Spearmen with a bit of Ice element flavoring, they are honestly still useless. They are unlocked after Grenadiers, which instantly makes them obsolete. Unlike Spearmen their tighter Triangle formation is bunched up enough that a single good Ranger, Grenadier or Fireball shot can kill the entire squad in one go, and they are no where near fast enough to close the distance in time. The same problem goes for Attacking with them; you'll constantly lose them in droves due to excessive wounds (or just getting outright slaughtered).