Counter-heroes in duel mode (3.1).

I think it's quite possible. 1) Take Ossir and block the archers. Direct all the attack towards the main troops (don't touch the summoned ones). 2) Take Synitar and easily defeat all the demons with METEOR in 10 minutes. 3) Take Irina (Iris) and eliminate the main troops. 4) Take Orson with TONS of decaying mass, called undead, and easily defeat Nimue. ------ ALWAYS ATTACK ONLY THE MAIN DEMON TROOPS. DON'T TOUCH THE SECONDARY ONES.

Added after 3 minutes
M@)(iM, Irina (Iris) is simply perfect against Ossir. She's just an anti-archer. :)