The Darkness Q&A

Is there any chance to get Infinite health and Unlimited Ammo on this game? cause i think is pretty Cool if I just do an execution move and never dying! he's A demon isn't He?

Im stuck on the bit when i have 2 kill the last one of paulies men that vinny tells you to kill on Gunners Hill. It says hes on higher grounds but i cant get to any higher grounds to find him. And also i dont know how to get to central hill (or summin like tha...