i know people will probley think im stupid from saying this but i have no clue where to get more then the 30 you start with

There are infinite batteries but you cant get more than 30 units in your camera. Just restock and shoot some more.

oh right thank you guys

and another question after the time goes to 0 is there just some scene and the helicopter come get you cause i've noticed there's different endings is there some stuff you need to do for different endings

To get Ending A(best one) just meet Isabella at 11 am then go to the heliport. I wont tell you the movie though if you havent beat it yet.

ok but i heard something like if you don't get rid of bombs or something bad ending

Ya I think theres about 4 or 5 endings. Its pretty hard to get the bad ending unless you want it.

well can i still get 72 hour achievement for all of them

when i was buying this game the guy in shop told me you can either go do heaps of stuff etc or hide cupboard

I think so except for the bad ending. Although, you have to get Ending A to get overtime mode.

all the endings i've seen r A,B,C,D,and F.Its just like school,the worse the letter the less points you get.(There is no E i think ,No one likes this vowel for some reason)