Thanks mate.Stupid me kept pushing circle before i realised u have to push square as well!

Thanks to everyone who replied,re Nostalgia mission.I finally beat it,and finished game,and im now playing it again.Some of u are a bit hyper critical of this game.sure,it has its glitches,but its a lot of fun.The dialogue,especially in the first half,on north island by the natives,puts me in fits of laughter when they come after you.I love the free form element of it all.You dont have to follow campaign mode all the time,so u can build up ur weapons and extra ammo pouches,ect in the side missions.Just enjoy it and have a bit of fun! Peter.

PLEASE HELP! Playing it on ps3.Cant get past the guy who ambushes me underwater on the nostalgia boat mission.The "MASH" button?function works haphazardly...I can push him away ONCE,then he knifes me.50times ive tried it,even on lower difficulty.Any obvious hints as to WHAT i am doing wrong,please guys??

Please-Im playing this game on PS3.Am stuck in the Nostagia Boat mission.Cannot get past the guy who ambushes me underwater.I keep pressing the "MASH" button,and keep getting killed.Have gone thtough it 50 TIMES!! Its so frustrating with some games with these ridiculously hard sections,which seem like a fluke when u finally do it.Ruins the replay value of some games.Despite that,its a great game.Would appreciate a hint guys.Thank you.