From the readme.txt:

Laundry- Hostage Rescue

Terrorists are holding four hostages at their makeshift base
in a former laundry/dry cleaners on the edge of downtown.

Terrorists: You are holding several contractors
hostage - keep them alive until they are no longer
necessary to you, but spare no expense to prevent the
enemy from recovering them!

Counter-Terrorists: Your team has been inserted at a
loading dock close to the location where the hostages
are being held. Make contact with them and escort
them to safety, and eliminate all terorrist threats.

Credits:
http://www.rabidmnky.com
http://www.texturehub.net (a few overlays)
Original cs_backalley for 1.6 by TYR
Most art assets by Valve