I made a walkthrough the multiplayer maps but the player can't use weapons, only the placed machineguns.
At least, some people can see how the maps look like in their PC's until WE can log in multiplayer... :C

Open console with: o
type: "map" and "the name of one the following maps" and enter:
Example: map cw2_rooftop_gardens

Console names:
cw2_alien_vessel
cw2_alien_vessel_small
cw2_church
cw2_city_hall
cw2_collided_buildings
cw2_cxp_liberty
cw2_cxp_liberty_mil
cw2_cxp_liberty_statue
cw2_downtown
cw2_lighthouse
cw2_pier
cw2_rooftop_gardens
cw2_terminal

Long names without order
* City Hall
* Downed Bird
* Evac Zone
* Impact
* Liberty Island
* Light House
* Parking Deck
* Pier 17
* Sanctuary
* Skyline
* Terminal
* Wall Street