Couples of questions
 

I have couple of mission where I am stuck;

Where do I find the pictures of naked women

where do I find Jackson senoir the canibal chief's brother

and the mission of the booze where I have to bring box of liquor. I brought 10 boxes of each but now I still have the mission. Do you have to sell a certain amount of box to finish it.

Thank you

PS: You are my only hope lol (so hard to find help for this game)

AFAIK booze quest isn't meant to be finished - you can bring him more boxes and he'll buy them, paying good money.
Jackson senior is Ungan, he is in the Ungan palace locationin northern city. Did you talk with Valium in southern city? If i'm correct, he is needed only in one main quest branch where you work with cannibals.

how to find the pictures for the old man.....