The Cauldron South holds 6 Cluemaster Puzzles in LEGO Batman: Legacy of the Dark Knight. This guide covers all six – Weighing Up, Run VT, What’s Behind Door #1?, Canned Laughter, Marketing Cycle, and Come on Down! – with map coordinates, an overview map, and step-by-step solutions.
Related Guides:
All 23 Red Brick Locations & Looks
Cluemaster Puzzles – Old Gotham West
Cluemaster Puzzles – Old Gotham North
All Riddler Puzzles – The Cauldron North
All Riddler Puzzles – The Cauldron South
All 9 Subwayne Locations and Solutions
LEGO Batman: Legacy of the Dark Knight Hub
1 – Weighing Up
Coordinates: 147, 433
Weighing Up is in the center-west of The Cauldron South, by the waterfront at the “Capital Moving Co.”
This is a scale, and the number 200 (red arrow) has to be reached by putting weights on it. There are a couple of weights scattered around. There is a shipping container you can open with Batman’s Bat Claw. Inside is a 90. I solved it with 90 + 75 + 20 + 15
2 – Run VT
Coordinates: 140, 491
This Cluemaster Puzzle is in the north, at the border to The Cauldron North, at the Gotham Bus Co.
Destroy the boxes in front of the puzzle and build a battery-powered projector. You can find it on the street level below.
Switch to Nightwing or Robin and use the staff to enlarge the notes on the screen. Then switch to Batman to turn the notes with the yellow control wheel so they fit the ones on the screen.
3 – What’s Behind Door #1?
Coordinates: 226, 498
This puzzle is in the northwest of The Cauldron South, just at the border to The Cauldron North, at Soder Cola.
Destroy the box to the left of the red buttons on the floor and build a lever. Pull it to open the flaps covering the red buttons.
You now have to play a small “Memory” card game to match the gates that fit. Buttons 1+4, 2+6 and 3+5. Then the puzzle is solved.
4 – Canned Laughter
Coordinates: 242, 493
Canned Laughter is a few steps east of the previous puzzle at the Soder Cola can.
Destroy the two chimneys on the roof and build a yellow control-wheel unit. Turn the unit so that one connector faces the Soder Cola can and the other faces the generator on the other roof.
Head over to the generator and use the Cable launcher to connect the control wheel unit to the one that is connected to the generator. Use Nightwing’s stick to charge the generator. This will solve the puzzle.
5 – Marketing Cycle
Coordinates: 255, 476
This puzzle is not far from the previous one. Just head southeast, and you’ll find it next to a burger shop.
This puzzle is all about advertising. Look up, and you will see a couple of billboards. One of them was shot by a Foam Spray. Shoot the foam to unclog it. On the other side is one of Batman’s yellow grapple hooks. Use the Bat Claw to pull away the billboard’s panel, revealing more cogs.
Switch to Jim Gordon and shoot the Foam Sprayer at the cogs when the billboard shows the Think Thank Thunk advert. Do this on the left and the right billboards. Then, wait for the middle one to show the ad for the puzzle box to open.
6 – Come on Down!
Coordinates: 149, 387
Come on Down! is the fourth Cluemaster Puzzle Room to be solved after Clue’s Done It. Like with the Riddler Puzzle rooms, they are unlocked procedurally after solving enough puzzles in the open world. Only one of them is active at a time.
Come on Down’s puzzle room is right next to the Subwayne.
This puzzle room is on the complex side and has various puzzle areas. Right by the entrance is a robot puzzle. In the area to the right is a second robot puzzle, together with a mechanism that requires an access card. Directional bricks are stored on shelves across this big room. They can be destroyed to reach them. At the far end are two tubes. In one of them is the access card, in the other the puzzle box.
Most of the directional bricks you need to solve the puzzles are on the other side of the room, and you can’t climb up the ledges with them. So they need to be transported. There is a crane-like feature in this room that you can load with three directional bricks. Then shoot the target so it travels to Puzzle 2. There are targets on each side, so you can let it travel back and forth.
Now you can solve the second puzzle to the left of the entrance to get the access card.
Solution: E – N – E – E – E – N and press the button.
Pick up the access card and put it into the nearby card slot. This will change the above crane tracks so that the puzzle by the entrance can be reached by the crane. You have to load the crane twice and send it to the entrance puzzle.
Solution: N – N – E – E – S press the button for the Puzzle Box.
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About LEGO Batman: Legacy of the Dark Knight
Release: May 22nd, 2026
Developer: TT Games
Publisher: Warner Bros. Games
Official Website: https://legobatmangame.com/










































