Yes, of course one can cheat (everyone does). In fact if you make a truly terrible mistake, remember to immediately look angrily at your partner.
Speaking of mikrokosmos, which you mentioned - isn't it just a practice method, with little musical value? I've heard the first few pieces and there was nothing interresting at all with them.
Wait, is this only 2 piano, or can it also be 1 piano four hands? If so, I'm disappointed in Bernhard for leaving out Ravel. . If you can, you can try playing his Ma Mere L'Oye, Rapsodie Espagnole, Sites Auriculaires, or the beautiful La Valse. There are a few others too, but I forget at the moment.