Sort yourself out. The harder the Easter egg the better. It can be tricky at first, but if you have a brain and aren't a complete noob (along with your 3 team mates) you should be able to do the Easter egg. Ive done it 10 or so times. In one game, twice before round 13.
Do the tiles as early as possible, then do the water slide straight after.
Everyone rape the Mystery Box to get the 31-79, you want it as early as possible.
Shrink the diamond.
Leave a napalm zombie and a few crawlers at the end of the round. Everyone wait at spawn and someone bring the napalm across the bridge and through the mud pit. Then all move and guide him down through the tunnels.
Take the napalm and get him back to the bridge. Repeat the process and use him to set off spike mores.
Kill the napalm, keep the crawlers and do the Mud Pit tiles and knife the 12 panels.
Continue on until 31-79 is pack a punched then do the Gongs and finish it...
Once the 31-79 is PaP, you can do the whole Egg at once at the end of a round, if you don't have a retard that kills the napalm zombie and knows how to guide napalm/crawlers around a room.