All Safe Codes And Combination Locks

All Safe Codes And Combination Locks

Throughout A Quiet Place: The Road Ahead, players can discover locked briefcases and keypad doors containing important resources, lore collectibles, and survival supplies.

Most locked containers reward:

• inhalers
• crafting materials
• documents
• medical supplies
• collectibles

Opening every briefcase is also required for the Code Breaker trophy/achievement.

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Lake House Briefcase Code

Combination: 481

The first briefcase appears during the Lake House chapter shortly after the forest section.

After Alex reaches the cabin area:

• enter the small shed beside the grill
• look on the counter inside
• enter the code 481

This briefcase contains useful early-game resources.

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Trainwreck Briefcase Code

Combination: 369

The second briefcase is found during the Trainwreck chapter.

To reach it:

• move through the flooded area
• remove the wooden plank blocking the side path
• climb over the ledge
• cross the wooden bridge
• enter the hut at the end

Inside the hut, enter the code 369.

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Harbor Briefcase Code #1

Combination: 629

The first Harbor briefcase appears near the beginning of the Harbor chapter.

When you reach the large statue area:

• take the left path
• vault over the fallen tree trunk
• check the nearby bench

The briefcase sitting on the bench opens with 629.

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Harbor Briefcase Code #2

Combination: 347

The final briefcase appears later in the Harbor section after progressing through the tech store area.

To find it:

• reach the gas station rooftop section
• climb over the truck
• move across the rooftops carefully
• head right toward the barrel area

Enter the code 347 to unlock the final briefcase.

This is the final container needed for the Code Breaker trophy.

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Harbor Apartment Keypad Door

Combination: 615

The Harbor apartment keypad door appears during one of the game's later progression sequences.

You can technically solve the puzzle by reading nearby clues and calendar notes, but the correct keypad code is simply:

615

Opening this door allows progression through the apartment area.

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Why These Codes Matter

The locked briefcases are worth opening because they often contain:

• inhalers
• crafting materials
• lore collectibles
• survival resources
• hidden documents

Some of the later sections become significantly easier if you collect the extra supplies from these containers.

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Code Breaker Trophy Requirements

To unlock the Code Breaker trophy/achievement:

• open all four briefcases
• use every combination successfully
• collect the rewards inside

The Harbor rooftop briefcase is the one most players accidentally miss during their first playthrough.

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Tips For Safe Exploration

Many locked containers are placed in noisy or dangerous areas.

While searching for briefcases:

• crouch whenever possible
• avoid puddles and glass
• pour sand over loud surfaces
• listen carefully for creature patrols
• do not rush collectible areas

Several containers are intentionally placed near high-noise environmental traps to pressure the player into making mistakes.