Well I managed to finish it after retrying chapter 14 nine times. On the 9th time it just worked
Wish I hadn't have bothered now. WORST ENDING EVER!. after the huge cinematic detail of the story throughout, the end cutscene must have been put together in a few minutes. Talk about anticlimax.

just read a few reviews on Jimmy's Vendetta and it sounds awful, no story, a hand full of missions and the objective is to string together headshots and finish the missions as quikc as possible?!? making it into an arcade game :/