OP is an idiot for staying up for three days for something like that and for using energy drinks and "less legal" things to do it.
My longest stint was probably about 14 hours, playing while I ate meals. The one I remember best is when I sat down to play Reach for the first time and got up hours later around 3:00 in the morning when I'd beaten it, mostly because I kept going "eh, why not, I can play a little more".
