Metal Gear Solid 1 psn classic Helppppp

Hi, i bought mgs1 of psn yesterday and im already stuck on the first opening leval. I just have one question, How do you silently kill a enemy bare handed? i tried like a hundred times trying to but when i had a enemy in my hands he would wiggle around drop and get back up a second later. And can you change the controls to anolog?

easier just to sneak around them in the first level. but if you feel its easier to kill sneak up behind them and grab them with square and keep hittin it till to break their neck. You can also find a gun in the truck straight ahead after you come up the elevator.