How do i beat Vamp on Metal Gear:Guns of Patriots? ?

Question

I made it to where Ocelot is working on REX and I cant figure out how to beat Vamp. I shot him over 800 times and he didn't die. I need help, any you can give will be helpful. If you can help me, I will gladly give you 10pts.

Answer 1

use cqc behind him when he's down. whip out your syringe (nothing else) when he's down, and i believe you press square.

Answer 2

You gotta shoot him until he gets tired and down on his knees, then equip the syringe and grab him and inject him with the syringe!

Answer 3

when you "kill" him, he lays down for a while, when hes down, run up behind him and equip the syringe.

As he gets up CQC him, and perform the throat-slit move (R1 + triangle)