Wait what roof? Starter room roof?

Oh and I absolutely LOVE this map. Fantastic job keep it up!

Can anyone please tell me where this buy able ending is? I have looked everywhere I just cannot find it. I opened all the doors got all the perks nothing seems to have changed. Anyone found it?

I just got world at war and sorry I'm still a noob...I have made a folder in the waw folder called mods and installed them map, however after install the map isn't in there and not in mods ingame. What am I doing wrong? It does have a shortcut on the desktop.