awsome idia stradegy buy all guys upgrade them then get great guns yatayatayata when u did everything buy baricade upgrades and ammo upgrades and when u need health u buy it for 25% at 400$ so 25%of 10000 is a 2500hp buy for 400 dollars
cot 5 is the easiest beat it when i was lvl 13 red 2 time campaighn use goblins to slow him down try blowing him over ur powerfull units ignore goblin kill base base duys goblin duys but keep goblin away from base