The Cluemaster puzzle nicknamed “I’ve Started So I’ll Finish” is the very first contraption the Dynamic Duo runs into during Robin’s introductory chapter in LEGO Batman: Legacy of the Dark Knight. It looks almost identical to a Riddler box, but the 1, 2, 3 markings give the Cluemaster away. The pillar holds three symbol slots, each driven by a different mechanism, and all three must match the cues in the room before the cage pops open.
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Quick answer: Set the three pillar symbols to pi, leaves, and globe. Use Robin’s tool on the wall slider for pi, the dropped handle on the cog for leaves, and his grapple to hook the dumpster to the ceiling point, then slide it to globe.
Image credit: Warner Bros. Games, Warner Bros. Interactive Entertainment (via YouTube/@Trophy Tom)
When you reach this puzzle
The puzzle appears during The Dynamic Duo, the Robin-focused mission that follows a short stretch of AR challenges. You don’t need any additional characters or gadgets beyond Robin’s standard kit, which makes it a clean introduction to how Cluemaster boxes work compared to Riddler ones.
Face the pillar and look for the third symbol switch, which is mounted on the wall to the left. Use Robin’s tool on the slider there and shift the icon until it lands on pi, matching the cue painted on the wall.
Shift the icon until it lands on pi | Image credit: Warner Bros. Games, Warner Bros. Interactive Entertainment (via YouTube/@Trophy Tom)
Slot the handle into the empty cog on the next pillar over. Rotate it until the symbol changes to leaves. This locks in the second of the three required icons.
Rotate it until the symbol changes to leaves | Image credit: Warner Bros. Games, Warner Bros. Interactive Entertainment (via YouTube/@Trophy Tom)
Use Robin’s gadget to attach the dumpster in the room to the anchor point on the ceiling. With it suspended, move the slider with his tool, so the final symbol shifts to globe.
With all three symbols matched (pi, leaves, globe), the cage unlocks. Step in to grab the clue and collect the reward inside.
With all three symbols matched, the cage unlocks | Image credit: Warner Bros. Games, Warner Bros. Interactive Entertainment (via YouTube/@Quick Tips)
Symbol cues at a glance
Slot
Symbol
How to set it
Wall slider (left)
Pi
Use Robin’s tool to move the symbol until it matches the wall cue
Pillar cog
Leaves
Knock down the hanging part, pick up the handle, and turn the cog
Dumpster slider
Globe
Hook the dumpster to the ceiling point, then slide its symbol
How to know it worked
Once the third symbol clicks into place, the cage on the puzzle opens on its own, and the clue item becomes interactable. Picking it up triggers the reward drop and progresses the Cluemaster storyline, unlocking the first Cluemaster Challenge Room and putting the rest of the Cluemaster Puzzle Boxes on the map across Gotham’s districts.
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Tip: After clearing this first box, send Batgirl to hack the nearest tower so every remaining Cluemaster icon shows up on your map, which makes hunting down the rest far quicker.
Image credit: Warner Bros. Games, Warner Bros. Interactive Entertainment (via YouTube/@Quick Tips)
If a symbol won’t change
Each of the three slots is driven by a different mechanism, so the gadget you use matters. The wall slider and the dumpster slider both respond to Robin’s tool, while the middle slot only turns once the handle is seated in the cog. If a symbol refuses to budge, you’re almost certainly using the wrong interaction, or you haven’t dropped the hanging piece yet to get the handle.
