Alright, I beat everything.. still havent unlocked everything though... Btw for any of u having trouble on the iron giant, use epic units, including death, because death has the meteor lvl2 spell which u will want to use to do major damage :D anyway, 5/5'd this kept my attention even when i thought it wasnt worth it :p
It's too bad that the red stages aren't hard, they just take a loooong time... like the iron golem in the 'go goblins go' stage... it's not hard at all it just takes AGES making me suicide my hero so i can gtfo... This is the first epic war i'm going to rate 4/5 stars... the others are just better.
Please try to get all stars :)