MGS4 Master Collection Walkthrough: How I Get Through All 5 Acts
My route through all five MGS4 Acts, including Naomi's footprints, the resistance tail, Shadow Moses password 48273, Vamp, Mantis, and Outer Haven.
Read Guide →Game Guide Hub
My starting point for MGS4 Master Collection: finish the five Acts, build a better NG+ save, clean up collectibles, or prepare for Big Boss.
Recommended Order
Use these guides to find the right Metal Gear Solid 4: Guns of the Patriots walkthrough, solution or next step.
Walkthrough
My route through all five MGS4 Acts, including Naomi's footprints, the resistance tail, Shadow Moses password 48273, Vamp, Mantis, and Outer Haven.
Checklist
What I pick up, save and postpone on my first MGS4 run so the completed save is ready for NG+ without turning every Act into a collectible sweep.
Collectibles
My MGS4 collectible route for all 5 Dolls, iPod Tracks, FaceCamos, 65 Flashbacks, 4 Model Posters, Shadow Moses ghosts and major missables.
Challenge Guide
How I prepare and run the MGS4 Big Boss Emblem on The Boss Extreme, with safer NG+ gear, frequent saves, zero-kill checks and Act-by-Act risk control.
Guide Cluster
My route through all five MGS4 Acts, including Naomi's footprints, the resistance tail, Shadow Moses password 48273, Vamp, Mantis, and Outer Haven.
Read Guide →What I pick up, save and postpone on my first MGS4 run so the completed save is ready for NG+ without turning every Act into a collectible sweep.
Read Guide →My MGS4 collectible route for all 5 Dolls, iPod Tracks, FaceCamos, 65 Flashbacks, 4 Model Posters, Shadow Moses ghosts and major missables.
Read Guide →How I prepare and run the MGS4 Big Boss Emblem on The Boss Extreme, with safer NG+ gear, frequent saves, zero-kill checks and Act-by-Act risk control.
Read Guide →For a first MGS4 Master Collection run, I use the full walkthrough when the story route or a boss is stopping me, and the first-playthrough checklist for the few pickups and decisions worth handling before NG+.
After the ending, the route splits. The collectibles and missables guide owns Dolls, iPod Tracks, Flashbacks, FaceCamos, posters, ghosts and weapon cleanup. The Big Boss Emblem guide owns The Boss Extreme requirements, preparation and challenge-specific strategy.
I keep broader Master Collection questions here until they need a guide of their own.
MGS4 makes more sense once I stop expecting one playthrough to do everything.
The campaign itself is only five Acts. The much larger commitment comes afterward, when a completed save starts carrying weapons, collectibles and unlock progress into NG+.
That gives me four different kinds of run:
learn and finish the story → leave the first save in good shape → clean up the collection → take on challenge requirements such as Big Boss.
Trying to combine all four on a blind first playthrough usually makes the game harder to read than it needs to be.
The Master Collection does not change that basic structure. MGS4 is still the same five-Act campaign at its core, now available on modern platforms after spending its original life on PS3.
The campaign order is:
Liquid Sun → Solid Sun → Third Sun → Twin Suns → Old Sun
That is the entire story structure.
MGS4 is fairly linear, but it does not feel like five versions of the same level. The problem in front of Snake keeps changing: open battlefields give way to tracking, following an NPC, revisiting Shadow Moses and eventually dealing with encounters that depend on understanding a mechanic rather than simply doing more damage.
If I am stuck on where to go, Naomi’s trail, the Act 3 resistance member, Shadow Moses progression, Vamp, Screaming Mantis or Outer Haven, I stay with the full five-Act walkthrough.
The Hub only needs the shape of the journey.
I do not turn the first playthrough into a full collectible sweep.
There are still a handful of things worth handling because they make later runs noticeably better.
The first-playthrough checklist covers those in detail, including the regional disguises, useful free weapons, the FROG Doll and four B&B Dolls needed for the Solar Gun, the Act 4 Drebin Point bonus and the Act 5 shop discount.
That is enough.
I would rather reach the first ending knowing how MGS4 works than repeatedly reload an Act because I tried to combine a blind story run with 100% completion.
The Boss Extreme is not available from the untouched starting difficulty list anyway. A later challenge run already assumes I have finished the game once.
So the first clear is not wasted preparation.
It is what creates the save I can build on.
MGS4 is unusually friendly to the idea of continuing the same save and unusually unfriendly to the idea of finishing every completion goal in one pass.
The collection mixes:
Some of those are ordinary pickups.
Others depend on a one-time action or a later completed-save run.
The two optional iPod Tracks from the Act 4 password sequence are a good example: I cannot permanently keep both from the same playthrough. Emblem rewards push the completion route even farther beyond the first ending.
That is why I use the collectibles and missables guide as a cleanup route rather than trying to turn this page into an item catalogue.
If a common weapon is missing, I usually keep going.
If a non-lethal Doll condition, NPC interaction or hidden Flashback is about to disappear behind me, I pay much more attention.
The Big Boss Emblem is not the harder version of my normal Walkthrough.
It changes the decisions I make inside the same Acts.
The final run has to deal with The Boss Extreme, the five-hour limit, zero Alerts, zero Kills, zero Continues and the Recovery Item restriction. A route that is perfectly acceptable for finishing the story can therefore be a bad route for Big Boss.
I also do not need to learn the challenge on an empty save.
NG+ lets me enter with useful non-lethal weapons, disguises, Solar Gun access, Chaff and other supplies already prepared.
That is why the Big Boss Emblem guide owns those requirements and the Act-specific risk points.
The Walkthrough tells me how progression works.
The Big Boss page tells me what changes when a single Alert or accidental human kill can invalidate the attempt.
The important distinction is between the game route and the hardware around it.
MGS4 Master Collection is the first port of the game since the original 2008 PS3 release. The five Acts, maps and basic progression are still recognizably MGS4 rather than a remake built around different levels.
The modern release can run at much higher resolution and frame-rate ceilings.
Current maximums for MGS4 are:
Those frame rates are ceilings rather than guarantees that every scene stays locked to the listed maximum.
That is why old MGS4 knowledge is not automatically useless.
A route through a building, the identity of the resistance member or the underlying logic of a boss can survive the move to modern hardware.
An instruction built around an old controller trick deserves more caution.
Finishing the story once and completing MGS4 are very different commitments.
There are 40 Emblems, and some requirements conflict strongly enough that the entire set cannot be compressed into one or two runs.
The minimum route to all 40 requires eight completed playthroughs on the continuing save.
That matters because the Emblems are not isolated bragging rights.
The iPod collection eventually runs into Emblem rewards, so Sounds of the Battlefield reaches beyond physical song locations and into the larger completion structure.
A Big Boss run can satisfy several compatible Emblems at once, but it does not remove the incompatible requirements that force other playthroughs.
I therefore think of NG+ as continuation rather than repetition:
one run can handle a specific family of Emblem conditions while the completed save keeps everything already earned.
The PS5 Master Collection version has 35 trophies, including its Platinum.
One requirement worth noticing when comparing the modern list with an old MGS4 checklist is:
Cover-to-Cover Solid 4: Books of the Patriots
It requires reading every page of the Screenplay Book.
That material lives outside Snake’s five-Act collectible route, so I do not search Shadow Moses or Outer Haven for it.
If every in-game collectible looks finished but this trophy is still missing, the answer is in the Master Collection’s Screenplay Book rather than another campaign pickup.
That is also why I keep the trophy-list question here for now instead of turning the collection page into a general PS5 menu guide.
MGS4 also has a modern bonus that never existed as part of the normal PS3 campaign route.
Qualifying save data from a title included in Metal Gear Solid: Master Collection Vol.1 unlocks Gold Camouflage for MGS4.
The useful detail is that I do not have to create the Vol.1 save first.
The requirement is that a qualifying Vol.1 save made with the same account is present on the device where I play MGS4. If I start MGS4 first and add the qualifying Vol.1 save later, I can still become eligible for the bonus.
Gold Camouflage is therefore a Master Collection account/save-data bonus.
It is not a hidden Act collectible, and I do not need it to finish the campaign.
This is one Master Collection question that can send me in the wrong direction if I remember the old Psycho Mantis jokes more clearly than the actual boss mechanic.
Three different items are easy to mix together:
Mantis Doll
Sorrow Doll
Screaming Mantis B&B Doll
The Mantis Doll is part of the actual boss progression. I knock it free, collect it and use Mantis’s own control mechanic against her.
The Sorrow Doll is another puppet weapon.
The small Screaming Mantis B&B Doll is different again: that is the collectible connected to the five-Doll Solar Gun chain.
So I split the problem by intent.
If I cannot progress the boss, I use the walkthrough.
If I beat the encounter but I am missing the Solar Gun collectible, I check the collectibles guide.
The old hardware references around Psycho Mantis are not the solution to the normal Screaming Mantis boss progression.
The original Metal Gear Online that accompanied MGS4 on PS3 is not part of the MGS4 Master Collection release.
There is no campaign unlock, completed save or hidden menu condition that restores it.
For this version, I treat MGS4 as a single-player progression, collection and challenge game.
That is different from Peace Walker in the same Master Collection Vol.2 package, which has its own online functionality.
The distinction matters because searches for “MGS4 Master Collection multiplayer” can otherwise make it look as though the original MGO should appear after some missing setup step.
It does not.
The completed save is the point where MGS4 opens up rather than the point where I throw the run away.
If I still have location-based collectibles, Dolls, Flashbacks, FaceCamos, posters, ghosts or songs to clean up, I move into the collectibles and missables guide.
If the collection is already in good shape and I want a challenge run, I use the Big Boss Emblem guide before selecting The Boss Extreme.
If I am still learning the campaign, I keep the walkthrough as the route reference and let later runs worry about completion.
That is the structure that keeps MGS4 manageable for me:
the first clear teaches the game, the completed save preserves the progress, and every later run has one clear reason to exist.