Dead Rising iPhone/iPad Cheats and Tips

Http://deadrising.wikia.com/wiki/Dead_Rising:_Road_to_Fortune
If your talking about the roof on top of the *DATA REMOVED* on overtime mode read this

Do all the cases and beat the game in Overtime. Once you do that you'll unlock infinite mode, which allows you do to whatever you want for as long as you want. This will help you get the Zombie Genocider achievement.

Yes you can.

Try to survive and do missons if you miss a importent misson you lose the game

It's a little tricky. You CAN'T go into aim mode with RT, because that will just make you throw the extinguisher, but I assume you know that already.

You need to distance yourself from him properly, set Frank so he's facing Paul (The Molotov guy), and then spray. You may need to fix Frank so that he's at a proper distance, and you need to spray at him for a good 5 seconds or so properly before he's put out. If you run out of extinguisher, there's another in the closet with the girls.

After that, escort him back to the safe room. Otis will call you later, telling you that Paul has something for you. After that, you can get and infinite number of Molotov's from Paul.