Achieving High Ranks
For the dedicated Metal Gear Solid player, simply completing the game is often just the beginning. The true test of skill lies in achieving the highest ranks, culminating in the legendary 'Big Boss' title. This section will guide you through the stringent requirements and offer actionable strategies to conquer this ultimate challenge across various versions of the game.
Understanding High Rank Conditions
While the core principles remain consistent, specific thresholds can vary slightly between the original PlayStation release, Metal Gear Solid: Integral (PC/Japanese PS1), and even the Game Boy Color version. Generally, high ranks are awarded based on a combination of factors, with 'Big Boss' being the most demanding.
Common High Rank Requirements (All Versions)
- Completion Time: Finish the game within a strict time limit.
- Alerts: Minimize or completely avoid triggering alert phases.
- Kills: Keep enemy kills to an absolute minimum, often zero (bosses are typically exempt).
- Rations Used: Avoid using Rations for health recovery.
- Saves: Limit the number of times you save your game.
- Continues: Do not use any continues.
- Special Items: Avoid using certain "easy mode" items (e.g., Bandana, Stealth Camo).
Specific 'Big Boss' Rank Requirements (PS1 / Integral / PC)
The 'Big Boss' rank is the pinnacle of achievement. Here's a breakdown of the typical requirements:
| Condition | PS1 (NTSC/PAL) | Integral / PC |
|---|---|---|
| Completion Time | Under 3 hours | Under 3 hours |
| Alerts | 0 | 0 |
| Kills | 0 (Bosses exempt) | 0 (Bosses exempt) |
| Rations Used | 0 | 0 |
| Saves | 3 or less | 3 or less |
| Continues | 0 | 0 |
| Special Items Used | No Bandana, No Stealth Camo | No Bandana, No Stealth Camo |
Note: The Game Boy Color version has different ranking criteria, often focusing on completion time and specific mission objectives rather than the detailed metrics of the console versions.
Strategies for High Ranks
Achieving 'Big Boss' is not for the faint of heart. It demands meticulous planning, precise execution, and an intimate knowledge of the game's mechanics and level design. Here are some actionable strategies:
1. Master Stealth and Movement
- Crawl is King: Utilize crawling extensively, especially in areas with tripwires, laser grids, or patrolling guards. It significantly reduces your visibility and sound.
- Sound Management: Pay attention to the surfaces you walk on. Metal floors are louder than concrete. Avoid running near guards.
- Line of Sight: Understand enemy patrol patterns and their cones of vision. Use corners, crates, and shadows for cover.
- Distractions: Use Chaff Grenades to disable cameras and electronic devices temporarily. Throw empty magazines to distract guards away from your path.
2. Optimize Your Route and Time
- Route Planning: Before each playthrough, mentally (or physically) map out your most efficient path through each area. Minimize backtracking.
- Cutscene Skipping: Skip all non-essential cutscenes to save precious seconds.
- Codec Calls: Only make necessary Codec calls. Many calls are optional and consume time.
- Boss Rush Efficiency: Learn the fastest strategies for each boss. For example, against Revolver Ocelot, use the wall-bouncing trick with the SOCOM. For Psycho Mantis, quickly switch controller ports.
3. Zero Kills and Alerts
- Non-Lethal Takedowns: The SOCOM pistol (tranquilizer rounds if available in your version, otherwise headshots with the regular SOCOM are considered lethal) and the Stun Grenade are your best friends for neutralizing guards without killing them. Punching and kicking also work.
- Avoid Detection: If you are spotted, immediately try to break line of sight and hide. If an alert is triggered, you must restart from your last save or the beginning of the area if you want to maintain a perfect record.
- Chaff Grenades for Cameras/Sensors: Always have Chaff Grenades equipped when entering areas with cameras, infrared sensors, or laser grids.
4. Ration and Save Management
- Health Preservation: The 'no Rations' rule means you must avoid taking damage. Practice dodging attacks, using cover, and learning enemy attack patterns.
- Strategic Saves: With only 3 saves allowed, choose your save points wisely. Ideal spots are:
- Before the first major boss (e.g., Revolver Ocelot).
- Before a particularly challenging section or boss (e.g., Sniper Wolf 1, Psycho Mantis).
- Before the final boss encounters (Liquid Snake).
Alternatively, some players save after the torture sequence, as it's a critical point where a mistake can cost you the entire run.
5. Weapon and Item Loadout
- Essential Gear: Prioritize the SOCOM, Stun Grenades, Chaff Grenades, and potentially the PSG1 (for Sniper Wolf).
- Avoid Unnecessary Pickups: Don't waste time picking up items you won't use or that are not critical for your run.
- Thermal Goggles: Crucial for navigating areas with laser grids and identifying tripwires.
Common Pitfalls and How to Avoid Them
- Accidental Kills: Be extremely careful with grenades and explosive barrels. Ensure no guards are caught in the blast radius. Even a single accidental kill will disqualify you from 'Big Boss'.
- Falling Damage: Be mindful of ledges and heights. Falling can deplete health and is not recoverable with Rations.
- Torture Sequence: The torture sequence is a critical point. If you fail, you will use a continue, which disqualifies you. Practice button mashing or use a turbo controller if available.
- Wolf Cave Mines: The claymore mines in the Wolf Cave are a common trap. Use Thermal Goggles to spot them and crawl over them, or shoot them from a distance.
- REX Hangar Stealth: The final stealth section in the REX Hangar is notoriously difficult. Use the cardboard box strategically and learn the patrol patterns of the Genome Soldiers.
- Codec Call Errors: Accidentally calling the wrong frequency or engaging in optional conversations can cost valuable time.

Achieving a high rank, especially 'Big Boss', in Metal Gear Solid is a badge of honor. It requires dedication, practice, and a deep appreciation for the game's intricate design. With these strategies and a thorough understanding of the requirements, you'll be well on your way to joining the elite ranks of MGS veterans.