Here is a very old made map that was never finished from my friend TsoPANos who has quitted mapping. I know this is not close to your expectations like awesome custom weapons from Advanced Warfare or super long map with shit load of detail but the idea was good, maybe not from TsoPANos or me but from an other old map called nazi_zombie_tower i dont remember the creator.
TsoPANos Based on nazi_zombie_tower map made Nazi Zombie TowerHouse.
Heres a video showing the map and a download link in the description of the unfinished version i have.

http://www.youtube.com/watch?v=WVCZhOSm6_4