It's unforgivable that their is no manual. This game has some very nuanced controls and if you put the game down for a while, you may forget the controls. Also, playing around with the controls and pressing the wrong buttons is a good way to waste ammo or items. In a game like this, every item/bullet counts. I didn't know there was a stamina bar until I was killed because I could not kick. I am still not sure how to do the "shoot from your back" deal. Who knows what else I am missing.
I can explain it to you, but I can't understand it for you.