How to Earn the Big Boss Rank in MGS2: Metal Gear Solid Master Collection Vol 1

Welcome to the complete Metal Gear Solid 2 Big Boss Rank Guide covering everything you need to do to get the Big Boss Trophy / Big Boss Achievement in the Metal Gear Solid Master Collection Vol 1 for MGS2. This guide will demonstrate and explain everything you need to do to complete the game on the extreme difficulty, and all tips, strategies, and techniques will be explained. This guide will contain all bosses, including Olga, guard rush, Fortune, Fat Man, Harrier, Vamp, Tengu Skip, Metal Gear Rays, and Solidus Snake.

Here is the full list of requirements to earn the Big Boss Rank in MGS2:
1. Complete the game on any difficulty to unlock the Tanker-Plant scenario.
2. Complete the Tanker-Plant scenario on Extreme or European Extreme (it is recommended to load the completed game save file instead of choosing "new game").
3. Complete the Tanker-Plant scenario in under 3 hours (skip all cutscenes and codec conversations).
4. Continues are not allowed. If something goes wrong, exit the game and reload the last save. You can perform a soft reset by holding down all four controller shoulder buttons and the equivalent of "select" and "start" for a few seconds. On PS5, that would be L1, R1, L2, R2, Touchpad, and Options. The soft reset is much faster than exiting the whole game and reopening it.
5. The game will have 3 mandatory alerts, but you cannot have any more alerts than that. The enemy can see you momentarily, but they are not allowed to call in the alert on their radio.
6. You may not kill any person, including bosses.
7. You may not use rations to heal. You are healed after bosses, and if you are hurt and have orange health, you can crouch down and stay still for a few seconds to recover some health.
8. You must take less than 10 life bars of damage on Extreme or 9.3 life bars of damage on European Extreme.
9. You must use less than 700 ammo (bullets, missiles, grenades). Sword slashes, coolant spray, and punches do not count toward this total.
10. Radar must be turned OFF.
11. You must destroy fewer than 60 mechanical units (cameras, ciphers, and Metal Gear Rays). You must destroy 20 Rays toward the end of the game, so you effectively cannot defeat more than 40 cameras / ciphers.
12. You may not use special items: Bandana, Stealth Camo, or any Wigs.

Follow this step-by-step walkthrough and tutorial to make earning this trophy as simple as possible.

Video Chapters
Introduction 0:00:00
Required / Recommended Settings 0:01:23
Tanker Chapter Start 0:02:14
Olga Boss Fight 0:04:26
Tanker Continued 0:05:09
Guard Rush 0:09:37
Finishing Tanker Chapter 0:11:32
SAVE 1: Starting Plant Chapter 0:14:30
Bomb Disposal 0:19:22
Fortune Boss Fight 0:36:09
Getting to Fat Man 0:37:45
SAVE 2: Fat Man Boss Fight 40:58
SAVE 3: After Fat Man Boss Fight 0:45:15
Bridge Semtex Locations 0:54:47
Harrier Boss Fight 0:56:57
SAVE 4: After Harrier Boss Fight 1:02:53
Vamp 1 Boss Fight 1:11:26
Escorting Emma 1:13:28
SAVE 5: Guarding Emma / Sniping 1:21:55
Vamp 2 Boss Fight 1:28:39
Getting to Arsenal Gear 1:29:51
SAVE 6: Tengu Skips 1:35:59
SAVE 7: Metal Gear Rays Boss Fight 1:40:23
Choking Scene & Solidus Boss Fight 1:50:08
Results Screen & Big Boss Trophy 1:56:06


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