These Epic War games have completely turned from the Castle Defence with arrows to this automatic summon and command type of battles. The 4th one was like this, but the 5th one needs some work.
If you are having trouble with the Survival, I suggest you get all three of the 1 gold powerups in the shop and spikes. FOR POWERS, I used Earthquake, Killer Spikes (from the shop), Reaper (I used reaper because it gains health when it kills something. If you prefer Skeletons, you can use that.), Lightening, Soul Jar (use when there are a bunch of people stacked in a row AND right at the beginning when they are all in one spot on the ground.), and Confusion (be sure you dont waste Mana when there are no enemy Melee types.)
Great Game! The only thing I can tell you is that Mission 14 is a bit heavy. Took me awhile to do it. And an easier way to upgrade weapons. But besides those, awesome game!
 "Epic War 5"){kind=icon}
 "Deep Sleep"){kind=icon}
 "Cat God vs Sun King"){kind=icon}
 "Frantic Frigates"){kind=icon}
 "Steampunk Tower"){kind=icon}
 "Mini Commando"){kind=icon}
 "Brawlin' Sailor"){kind=icon}
 "Little Wheel"){kind=icon}