big boss emblem 

the ultimate achievement in most of the metal gear solid game cept 3 since big boss wasn't around yet. usually requires beating the game on the hardest difficulty and not getting any alerts, any kills, using none or a limited amount of healing items and other crazy shit like that.

oh shit son, he got a big boss emblem, fuckers amazing at mgs!

big boss emblem by ryuuken July 6, 2008

Big Boss Emblems 

Achievements or awards presented to gamers who complete rank-styled videogames with unprecedented speed and skill. Coined from the big boss emblem presented to players who complete Metal Gear Solid games in a limited amount of time with 0 kills, deaths, rations used, alerts, less then 10 bars of health drained, and so on.

player 1: "So are there any Big Boss Emblems (B.B Emblems) in this game???"

Player 2: "It's Devil May Cry, of course there are Big Boss Emblems!"

Big Boss Emblems by AspiringMangaka July 7, 2010