The AI is kinda crap, I'll be down to 3 towers 2 Maxed out Producers and Magic guy, while the other guy'll have 7+ Producers and not be able to take me out cause I just distract the AI by attacking repeatedly the same producer and then slowly giving my Magic guy power to do a take over a couple of times. After that I somehow won. This was level 33, soo not hard, but not exactly easy either...