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Mission 2: Infiltration – LEGO Batman Legacy Walkthrough

Mission 2: Infiltration is where LEGO Batman: Legacy of the Dark Knight shifts into full stealth mode. After a glacier brawl with League ninjas, Bruce and Talia must sneak through a heavily guarded temple, take down guards without being spotted, and solve environmental puzzles to push deeper inside. This guide covers every section of the mission in order, including all 5 Bonsai Tree locations for the Batcave Trophy, the hidden secret room where you’ll find the Ninja Red Brick, and the Ra’s Al Ghul boss escape sequence.

Related Guides:
Mission 1: The League of Shadows
LEGO Batman: Legacy of the Dark Knight Hub


Batcave Trophy: Bonsai Trees

Find and destroy 5 Bonsai Trees in this Mission to receive the Batcave Trophy: Bonsai Trees. Each tree adds up to the total of 170 Trophy Collectibles. Therefore, you will have 5 of 170 Trophy Collectibles after destroying all five Bonsai Trees.

Here’s where they are:

Red Brick: Ninja

There is a secret room below the temple. Keep your eyes open and follow golden studs!

Secret Room - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Mission 2 starts with a fight from the offset, where you have to defeat a group of Ninjas with the things you’ve learned in Mission 1: The League of Shadows.

Before sneaking to the target, look behind you to find a blue stud. Then use the vent to sneak under the floor.

Blue Stud - Sneak past the gueards - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Vent - Sneak past the guards - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

For Fun: Hot Tub

You can soak in the hot tub.

Fun Soak in Hot Tub - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

A Bonsai Tree is blocking the exit. Keep going in the underfloor corridor to find another exit. In this room, shoot the hinge of the rope that holds the chandelier that is hanging over the Bonsai pot that is blocking the vent exit. This will destroy the Bonsai Tree (1 of 5 to destroy in the area).

Vent Exit - Sneak past the guards - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Plant Chandelier - Sneak past the guards - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Batcave Trophy: Bonsai Trees: Destroy 5 Bonsai Trees

Destroy 5 Bonsai Trees in this Infiltration level to receive the Bonsai Trees Batcave Trophy as a reward. Destroying the plant above the vent exit counts as 1 of 5 Bonsai Trees and toward 1 of 170 trophy collectibles.

Infiltration Bonsai Trees - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

For Fun: Big Bounce

In the same room, look for a big, round cushion. Jump on it and perform a Big Bounce by jumping while on the cushion to reach the blue brick at the top.

Vent Exit Big Cushion - Sneak past the guards - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

You can now exit where the Bonsai Tree stood to go to the Throne Room. Take down the two guards on the exit (Talia will take care of the other one), then the one down below. The second takedown has to be well timed. There is one guard patrolling the area.

Vent Exit Go to Throne Room - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Vent Exit Go to Throne Room Takedown 2 - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Take care of the patrolling guard, and the coast is clear on this level. There are two ninjas patrolling the ground floor level. Remember: You can use “Detect” to find them. They will have a red outline. Grapple to the ledge above to continue. Take your time to have a look at the ground floor. There is a purple stud and two blue studs to be discovered. Purple: Near the ninja who doesn’t move. Blue: At the 2 Big Bounce cushions (there are two on the ground floor).

Outline Below Go to Throne Room - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Outline Above Go to Throne Room - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Batcave Trophy: Bonsai Trees: Destroy 5 Bonsai Trees

Destroy 5 Bonsai Trees in this Infiltration level to receive the Bonsai Trees Batcave Trophy as a reward. There is a Bonsai Tree on the ground floor level here. Destroy it for Bonsai Tree 2 of 5.

Bonsai 2 of 5 - Go to Throne Room - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Continue by grappling to the top floor, where the three ninjas are. One of them can be taken down by hanging onto the ledge. As for the other two, I let one of them notice me, so they moved to the ledge, while I dropped down onto the rail again to take them down from there. Same with the last ninja.

Two Guards - Go to Throne Room - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Two Guards one left- Go to Throne Room - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Enter the throne room. There are four ninjas there. They are all facing forward. You can also go around the back to find a blue stud. Then you can take them out from behind.

Entrance - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Back - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Notice that the chandelier has two hinges holding it. Shoot one of them. Be careful, the chandelier will crash down. Destroy all of the chandelier mechanisms, and you will be able to build a winch for the throne grapple.

Chandelier Hinges - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Chandelier Build - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Pick up the winch and attach it to the throne grapple hook. Then, turn the winch to get a bed-trampoline.

Winch - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Winch Attached - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

While on the bed, jump again to get a Big Bounce. It will take you up one level. You will find a blue stud and a bonsai tree here.

Bed Trampoline - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Bed Trampoline Next Level - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Batcave Trophy: Bonsai Trees: Destroy 5 Bonsai Trees

Destroy 5 Bonsai Trees in this Infiltration level to receive the Bonsai Trees Batcave Trophy as a reward. Bonsai Tree 3 of 5 is on this level, just around the corner. If you see the golden studs, just follow them to the tree and destroy it.

Bonsai Tree 3 of 5 - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

To get out of the Throne Room, look for a crawlspace and use it. Careful, there are ninjas patrolling on the other side. Use “Detect” to see them.

Crawlspace entrance - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Crawlspace exit - Find a Way to get outside - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Time it right to take down the two ninjas together with Talia. Then, take down the last guard up on the balcony, and you’re outside. There are two more guards down below to take care of.

After Crawlspace - Follow the Mountain Path - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Balcony - Follow the Mountain Path - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

For Fun: Relax!

Before building something to cross the gap, you can relax a little!

Relax - Build something to cross the gap - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

To cross the gap, scan the area and destroy the highlighted objects. You can also destroy things by throwing a shuriken! Build a giant crossbow and use it to cross the gap on a rope.

Items - Build something to cross the gap - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Build - Build something to cross the gap - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

On the other side, hang onto the ledge and shimmy to the right. Take down the guard. Keep following the golden stud line to the right and drop down to find a crawlspace and a blue stud.

ledge - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
ledge golden studs - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Red Brick Collectible: Ninja Modifier

Follow the golden studs on the ledge and drop down to find a crawlspace.

Go through the crawlspace and enter a secret room with two statues and four pressure plates. There are two stacks of books you can pick up and put on two of the pressure plates. Talia and Bruce will take care of the other two. This will reward you with 1 of 23 Red Brick collectibles.

Secret Room - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Secret Room Stack of Books - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Secret Room Red Brick - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Return to the upstairs balcony, where you have taken down a ninja before, and climb inside. There are two vents you can use to crawl underneath the floor.

ledge balcony - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Two Vents - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Both vents lead to the same room, which has two ninjas and a puzzle on the wall. Exit the vent and take down one ninja. Talia will take care of the second one. Scan the area to see two pressure plates that release two cranks when you stand on them.

Sneak through vents - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Puzzle Cranks - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Use the cranks to solve the puzzle on the wall. It has to look the same as the symbols next to the puzzle. This will open the door, and you can enter the temple. Grapple up to the crawlspace above the locked entrance door. By the way, there is a bonsai tree behind the locked door. Crawl through the crawlspace and exit on the other side.

Crawlspace entrance - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Crawlspace exit - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Use the cranks to solve the puzzle on the wall. It has to look the same as the symbols next to the puzzle. This will open the door, and you can enter the temple. Grapple up to the crawlspace above the locked entrance door. By the way, there is a bonsai tree behind the locked door. Crawl through the crawlspace and exit on the other side.

Crawlspace entrance - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Crawlspace exit - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Batcave Trophy: Bonsai Trees: Destroy 5 Bonsai Trees

Destroy 5 Bonsai Trees in this Infiltration level to receive the Bonsai Trees Batcave Trophy as a reward. Bonsai Tree 4 of 5 is just behind you when dropping down from the crawlspace.

Bonsai 4 of 5 - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

There are two guards patrolling the next section. Take them down, then take care of the third one on the balcony.

Temple Guards 2 - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Temple Guard 1 - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Descend by jumping on top of the flag poles. Then, continue on the ropes. Just follow the silver studs until you’ve reached the outside of the main temple area.

Flag Pole Descent - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Rope Descent - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Keep following the silver studs to an area with two ninjas and two crows. And head out to one of the grapple overview points.

Two guards after descent - Continue Through the Temple - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Overview Point - Find a way to open the door - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Take care of the ninjas below as you’ve learned. There is more than enough cover. Don’t forget to use “Detect” to see them. Also, don’t forget the blue stud on one of the grapple points. Then, solve the puzzle on the Combat Training gate. First, turn the right crank into the right position, then the left one.

Blue Stud Grapple Point - Find a way to open the door - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Puzzle - Find a way to open the door - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Fun?: Egg

There is an egg just below one of the starting grapple points. You can get to it by walking the narrow ledge of the watchtower below the grapple point and dropping down. If you hit it, it will release a burst of flowers and disappear.

Egg- Find a way to open the door - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

After the cutscene, defeat Ra’s in a boss fight.

After the fight against Ra’s, you have to escape the temple.

Batcave Trophy: Bonsai Trees: Destroy 5 Bonsai Trees

Destroy 5 Bonsai Trees in this Infiltration level to receive the Bonsai Trees Batcave Trophy as a reward. Right in the starting area, go to the left to find Bonsai Tree 5 of 5.

Bonsai Tree 5 of 5 Ras Al Ghul start - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

After the fight against Ra’s, you have to escape the temple. More Ninjas will appear when you approach the exit. Defeat all of them to allow Ra’s to appear again, constructing another exit.

Ras Al Ghul Ninja Attack - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Ras Al Ghul Another Exit - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Grapple up on the exit and jump onto the pillars below. Careful: There are falling rocks. Time your crossing. Grapple on the other side and again to get near the exit.

Jump across Ras al Ghul exit - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Grapple across Ras al Ghul exit - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Before leaving, make sure to head into the burning room to the right to find a purple stud. Destroy the furniture ahead to reach it.

Ras al Ghul Burning Room - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Ras al Ghul Burning Room Purple Stud - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Now you can head up to the exit. Dodge the falling rocks and avoid the burning flames from below. Everything will collapse, and you have to walk on a pillar to reach the top, where Ra’s Al Ghul attacks again. Fight and defeat him and his ninjas to end the mission.

Burning Floors Ras Al Ghul Exit - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com
Pillar - Ras Al Ghul Exit - Mission 2 - Lego Batman Legacy of the Dark Knight camzillasmom.com

Completing the second Mission, Infiltration, grants:
-> 1 Skill Brick (Yellow Brick)

Additional Collectibles:
-> Batcave Trophy: Bonsai Trees (Found all 5 Bonsais)
-> Red Brick: Ninja (Found the secret room)

Upgrade your skills with Skill Bricks from Missions.

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Camzillasmom Collectibles Hunter
It all began in the ’80s when I was just 7 years old. Starting with basic arcade games, I soon delved into titles like Loom and Monkey Island by Lucasarts. Throughout the years, as I indulged in more and more games, I consistently sought clear guides to swiftly navigate my gameplay. Now, it’s my turn to contribute back to the community.

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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/