Metal Gear Solid 3: Snake Eater HD Edition Tips

Get items from guards
To get ammo/grenades/medicine from guards do CQC from behind, and throw them down in front of you. As soon as they are down go into first person view and aim at them. After the put their hands on their head shoot beside them. They will yell "Don't shoot" or something of the sort, then shake and an item will appear. This can be done 3-4 times on each guard.