PlayStation 2 Scarface: Help Me!

Okay so I was doing good until I got to Downtown. Now im stuck on two missions and i cant beat them if my life depended on it.:mad: I cant beat U-Gin Shotgun Bar, where you have to do the sniping mission. I also cant beat Babylon Club Mission either. Does anybody have pointers I can have? To atleast beat them, I've tried like 100 times, literally on each :(
this took me a while too
try going into rage mode for the babylon club one itll make it easier
if that doesnt work u can always just cheat:)

the u-gin shotgun bar is easier
u just need to search every boat for a black guy wearing a blue hat and purple jacket
He should be in one of the smaller boats