Detective Duck The Bank Walkthrough (All Codes, Keys)

The Bank map is where the game starts feeling a bit more “detective-like” instead of just collecting items. There are multiple codes, small puzzles, and one final clue that ties everything together—so if you miss even one detail, it gets confusing fast.

Here’s the full walkthrough with every key, code, and step explained clearly.

Starting Area – First Key

Begin by interacting with the object near the entrance, because this gives you the first key, which is used to unlock the nearby room and start the puzzle chain.

Hidden Key Behind the Clock

Once inside, read the note carefully, since it tells you that a key is hidden behind the clock, and interacting with the clock gives you the Water Tank Key.

Water Tank → Keycard

Use the Water Tank Key to open the tank, where you’ll find a Keycard, which is required to access the staff-only section.

Staff Room Entry + USB Location

Use the Keycard to enter the Staff Only Area, then pick up the USB device near the board, as this is needed for authentication.

UV Code (440)

Before leaving, use the UV light to reveal a hidden code:

Code: 440

You’ll need this for the system login shortly.

System Authentication

Insert the USB into the system and wait for it to connect, then enter:

Code: 440

This unlocks the next restricted area.

Storage Room Key

Inside the newly opened area, collect the Storage Room Key, then use it to enter the storage room.

Storage Room Puzzle Code (1863)

Use your UV light again inside the storage room to reveal:

Code: 1863

Now you’ll need to input this using the color puzzle.

Color Puzzle Solution (1863)

The correct sequence for 1863 is:

• Red → 1
• (Next option) → 8
• Before Yellow → 6
• Green → 3

Enter the correct order to unlock the door.

Scissors + Hidden Books Puzzle

Inside, collect the Scissors, then cut open the boxes to reveal books, which give you digits for the vault code:

• First digit → 6
• Second digit → 9
• Third digit → 2

Final Digit (UV Clue)

Another note tells you the last number is in the consultation room, so go there and use UV light to reveal:

• Fourth digit → 0

Vault Code (16920)

Now combine everything:

Code: 16920

Enter this to open the vault and collect the Vault Key.

Tax Office → Remote

Go to the tax office and use the key to enter, then pick up the Remote, which is needed to activate the final clue.

Camera Footage (Final Evidence)

Return to the consultation room and use the remote to turn on the screen, where you’ll see:

• A truck leaving at 2 AM
• License plate: AA00BN

Identifying the Suspect

Enter the plate:

AA00BN

This reveals the owner:

Mr. Sterling

Correct Suspect

All evidence points to:

Mr. Sterling (The Manager)

Ending the Case

Select Mr. Sterling as the suspect and confirm your choice to successfully complete the bank investigation.

Quick Recap (All Codes & Items)

• UV Code: 440
• Storage Code: 1863
• Vault Code: 16920
• License Plate: AA00BN
• Final Suspect: Mr. Sterling

This map is less about difficulty and more about chaining clues together—once you follow the flow from keys to UV codes to final evidence, the solution becomes obvious without any guessing.