I think that their must be some kind of solo easter egg, I doubt they would make a map were everything can only be done by a team of four as they know that a large percentage of people don't have a reliable team of four people to play with.
Originally posted by Mudkip
there is no solo EE for shangri-la, because if there was, you'd have quick revive for an unlimited amount of time which means you'd never die
To stop people having unlimited quick revive would be very easy... they would simply just have a separate code for solo that does not give you the quick revive perk.
I hope that there is a solo easter egg, otherwise Treyarch have made a mistake and alienated a large percentage of zombies players.