I was worried when I heard about the one save but it didn't go that badly.
I only played through the game twice (72 hours) and once (overtime) to
unlock infinity mode. I don't have ever achievement (360/1000) but now I
can work on those.
They key is leveling up, don't worry about the cases expiring the first
time through, let it go & just have fun exploring & raising your level.
Make sure you have 3 guns in the Carlito levels & a katana does a great job
on that Butcher guy.
>> Stay informed about: Finished Dead Rising