It's actually not that hard for me, ngl. Possibly I might lose once or maybe twice if I'm unlucky. I always play with 2 sunflowers (preferably stuffy or maybe vamp), a tank (citron) and one pea/corn depending on what I feel like. For zombies, pretty much the same, 2 scientists and 2 heavy damage dealing characters.
I don't really have trouble with it but there are two requirements. Pots/Bots need to be strategically placed and up at all times. Second your team needs to be well balanced, a healer or two and a powerhouse, plus whoever you play as. (Commando Corn and Toxic Brainz make it easier but is not necessary.) I'd say my success rate is 80-90% as recorded during the Craaazy OPs challenge.
Guys, we're pretty sure they meant private multiplayer on crazy, not ops. But they never returned to clarify.
