The highest possible rank in a Metal Gear game is usually called Big Boss. This rank has you complete the game without killing, dying, or getting caught, and you generally have a pretty tight time limit to finish the game within. This video chronicles my experience getting the Big Boss rank or its equivalent in every mainline Metal Gear game.

Contents
00:00 Intro
01:30 Metal Gear
08:20 Metal Gear 2
15:28 Metal Gear Solid
22:08 Metal Gear Solid 2
30:43 Metal Gear Solid 3
36:17 Metal Gear Solid 4
44:11 Peace Walker
46:54 Metal Gear Solid V
49:10 Big Boss Rank

Creators referenced in this video:
https://www.youtube.com/ @SoulSignal⁩  
https://www.youtube.com/ ⁨@Centerstrain01⁩  
https://www.youtube.com/ ⁨@PerfectStealth⁩  
https://www.youtube.com/ ⁨@MaskedMatador⁩