Snake is my second so I'm not sure about this(and i'm not sure if its already known), but if u plant his c4 and then detonate it(downb) again while ur directly above ur opponent u will not only detonate the first c4 but you will also throw another one on them at the same time. I didnt see the animation for planting the second c4 but u hear the noise and when u downb a third time there is a second explosion. video later today