The death_sentence.zip file you have requested: Maps Levels Missions / Survival Maps / Death Sentence - 11.37mb is not available. Perhaps try browsing all files for the game Left 4 Dead and upload any files you want to share or are missing. This is the only information we could locate:
Survival map for L4D set in a prison. To alert the horde, break the control room'swindows and press the switch inside. Survival map for L4D set in a prison.