I just noticed this today. Looks interesting, especially if the gameplay is really like Desperados.
EDIT:
I found a review here:
http://www.gamercast.net/trapped-dead-review "The save system in the game is cleverly worked into the story, and requires you to find manholes or other safe spots to save your progress. However these areas can only be used once, and when there is a crowd of zombies between you and the next save point that keeps getting the better of you it gets frustrating that there are far too few save points throughout the levels, the inclusion of a free save system would have worked much greater in a game that literally throws hoards of zombies at you."
Ouch... that's pretty bad for someone who abuses Desperados quick save feature like me :-P