Detective Duck Train Walkthrough Solution

Detective Duck is a puzzle game on Roblox where you play as a duck detective.

Your job is to solve mystery cases by exploring maps, finding clues, and identifying the criminal.

In each scenario, you must crack the case before you run out of time or clues.

You can play solo or team up with up to five players, which makes solving mysteries more fun and cooperative.

In this post, we’ve shared the Detective Duck Train walkthrough solution to help you solve the train mystery step by step.

Detective Duck Train Walkthrough Solution

Here is the complete walkthrough to solve the Train Mystery and find the criminal.

Compartment 1: Starting Room

Step 1: Collect the Luggage Key

1. “Click on the red coat” in the starting compartment
2. You receive: “Luggage Key​”

Step 2: Get Scissors from Luggage

1. “Use the Luggage Key” on the blue luggage
2. Collect: “Scissors”​

Step 3: Cut the Teddy Bear

1. “Use the Scissors” on the teddy bear
2. You receive: “Compartment Key​.”

Step 4: Find the Door Handle

1. “Try to use the Compartment Key” on the door – it says “missing a handle.”
2. “Click on the blue luggage” on the shelf
3. Collect: “Door Handle​”

Step 5: Exit Compartment 1

1. “Place the Door Handle” on the compartment door
2. “Use the Compartment Key” to unlock it
3. “Exit” to the next compartment

Compartment 2: UV Light & Number Code

Step 1: Read the UV Light Hint

1. “Equip your UV Light” in this compartment
2. You see a hint: “Connect the numbers with the letters.”​

Step 2: Find Hidden Numbers with UV Light

1. “Use UV Light on the walls/objects” to reveal hidden numbers
2. Write down: “2041, -3, and 80​”

Step 3: Convert Numbers to Alphabet
Using the “window reference” (use your Magnifying Glass):

1. 2 = S (second letter in reference)
2. 0 = N (zero reference)
3. 4 = O (fourth reference)
4. 1 = W (first reference)
5. -3 = M (minus three reference)
6. 8 = A (eighth reference)
7. 0 = N (zero again)

Result: “SNOWMAN”​

Step 4: Open the Briefcase

1. Click on the “Magic Wand”
2. Enter the passcode: “SNOWMAN.”
3. “Briefcase” opens​

Compartment 3: Math Puzzle & Wire Cutting

Step 1: Solve the Math Puzzle
Looking at the colored triangles in the briefcase:

1. Blue Triangle = “10”
2. Red Triangle = 5 (so 5 × 10 = 50)
3. Green Triangle = 4
4. Equation: “50 – 4 = 46​”

Step 2: Open the Lock with Code

1. “Enter 46” into the lock
2. Lock opens​

Step 3: Cut the Wires

1. You see “wires blocking the key”
2. Collect: “Wire Cutters/Scissors”
3. “Cut the wires” to access the key​

Step 4: Collect Key & Exit

1. Collect: “Key”
2. Exit Compartment 3

Compartment 4: Safe Code Puzzle

Step 1: Find the Safe Code

1. Equip your Magnifying Glass
2. Read the wall – it displays the safe code
3. Safe Code: “4940”​

Step 2: Return to Compartment 1

1. Go back to the very first compartment
2. Enter the safe code: “4940”
3. Safe opens​

Step 3: Collect Items

1. You receive: “Lockpick Key #1”, “Lockpick Key #2”

Compartment 5: Chemical Reaction Puzzle

Step 1: Unlock Three Locks
Back in the compartment with locked doors:

1. S3 Lock – Use first Lockpick
2. S2 Lock – Use the second Lockpick
3. Third Lock – Use Lockpick (all three sets acquired)​

Step 2: Collect Items

1. Collect: Lighter
2. Collect: Potion​

Step 3: Create Acid

1. Use the Potion in the jar
2. Use the Lighter to heat it
3. Wait for the process to complete
4. You receive: “Acid”​

Step 4: Use Acid on Lock

1. Use the Acid on the final lock
2. Wait for the lock to dissolve
3. Door opens​

Compartment 6: SD Card Investigation

Step 1: Collect the SD Card

1. In room B3, click on the SD card
2. Collect: SD Card
3. Remember: You’re in room B3​

Step 2: Insert the SD Card into Camera

1. Go back to the first compartment (where you started)
2. Find the camera in that room
3. Insert the SD Card​

Step 3: Analyze the Photo

1. View the photo on the camera
2. From the angle, you can tell the Staff Room photo was taken from room B2
3. Remember this code shown: 9999

Compartment 7: Final Code & Book

Step 1: Enter the Code

1. Go to the wall code reader
2. Enter: 999 (or enter exactly as shown)
3. A book appears​

Step 2: Read the Book

1. Click on the book to read important investigation clues
2. This provides context for identifying the suspect

FINAL INVESTIGATION: Identify the Suspect

Step 1: Examine the Lock for Clues

1. Look at the broken lock on a door/box
2. Equip your Magnifying Glass
3. You see a dirt/stain mark on the lock​

Step 2: Compare with Room B3 Tools

1. Go back to room B3 (where you found the SD card)
2. Look at the tools hanging on the wall
3. Use a magnifying glass to zoom in
4. You see the SAME dirt symbol at the bottom of the tools​

Step 3: Connect the Evidence

Evidence Chain:

• SD Card found in “room B3”
• Photo taken from “room B2” angle
• Dirt symbol on the lock = matches “room B3 tools”
• The tools belong to “The Mechanic​”

Step 4: Identify & Vote

1. The Suspect: “The Mechanic”
2. “Vote for him as the suspect” in the final investigation screen

Suggestion

• Hackers & Exploits in The Forge
• Demonite in The Forge
• List of Totems in The Forge