Dead Rising 2

How do I get past "boom town"?

i got killed first casino i got to. :I

There's not really much to suggest other than playing better. If you have it, use the Dodge Roll or perhaps prepare with something like Painkiller. Don't bother using guns against the mercenaries; something like the Defiler or Knife Gloves would likely be more effective despite requiring you to move in close (again, use the Dodge Roll, or listen to see if they're forced to pause). If your level is low, you may just need to work on that and come back stronger on another attempt.