The Museum is a bonus level which is unlocked after finishing campaign. It consists of 3 large rooms. One filled with vehicles, the other two filled with people and weapons. You pick your weapons (optional) and you can either kill them while they are standing still or go to the front bench and click the 'DO NOT PRESS' bell. After pressing all the people will activate and try to kill you. After killing the wave, you go to the other room and repeat the process, then afterwards you can come back to the first one and start the process again. And eventually have fun until you die.
If you're talking about the museum level from Modern Warfare 2, then probably not. That was a one time thing.
No.
You must finish the game and watch the credits.
Sadly no.
nothing
At the museum... that place is unlocked when you beat the game.
There isn't one in there.
Press start and then go to leave game
There are 4 act I act II act III and the museum
Modern warfare reflex and modern warfare are the same. Modern warfare "reflex" means that its for wii. If its just modern warfare its for the other consoles
Yes you van by completing the game on any difficulty.
Modern warfare 2