i got under rated because the game is easy? i dont get it :S
Btw, if you look at your own castle while your units are thrashing the other one, it just goes faster.
Anyway, this game is easy as soon as you max mana and shield skill, no need to downrate me because you wasted your time :S
this game is ridiculously easy :S just max your mana, max shields, and max those hadouken harpies... when the stage starts, wait for your mana to fill up, then rush to enemy base shielding your units for the whole battle, none will die and you will simply win.
This works for most levels but the goblin one, which is quite a pain.
Just get the units that deal most damage to the battle, then shield them as long as you want until your mana runs out, this even works for the final battle with the giant over-pixelated yeti xD