Minikit 1
While progressing through the museum gallery, keep an eye out for three unique display cases. You must smash all three cases to get the first minikit.
Minikit 2
For the second minikit, find the gargoyle statue. Plant explosives at the base of the statue to blow it up and provide the pieces to assemble a lever. Flip the lever and step on both buttons at once to reveal the minikit.
Minikit 3
Race up the stairs and look for lasers guarding a security panel. Use the Joker to shoot and destroy the security panel, shutting down the lasers and allowing you to swipe the third minikit.
Minikit 4
After heading through an unlocked door, spot a tall platform on the left of the room. Use a character with a good double jump and leap up to the platform. Now knock over the platform's statue to get the fourth minikit.
Minikit 5
A glass display case in the center of the room protects the fifth minikit. You need to wear the Sonic Suit to break the glass and capture the canister.
Minikit 6
Look for a wall with an orange lever. Use a character with super strength to smash through the wall to the left. Inside, you'll find the sixth minikit.
Minikit 7
In the lower right portion of the same area, locate the pipe spewing hot steam. Put on your Heat Protection Suit and activate the pipe's lever. Blow up the metal gates in the center of the room and use the Sonic Suit to bust out the glass. Break apart the protected artwork to assemble the Joker's face and earn the seventh minikit.
Minikit 8
In one section, you'll need to assemble a wooden board to prop against some barrels to help you clear a security fence. Climb to the top of a pile of crates beyond the fence to spot the eighth minikit, which you can reach with a strong double jump.
Minikit 9
The same room contains a conveyor belt. Pull the lever to produce a box that you need to push across the room and on to the conveyor belt. Pull the lever again for a second box. Pushing this box on the conveyor belt will cause it to come out the other side as the ninth minikit.
Minikit 10
In the area filled with toxic waste, go to the elevator and double jump up to the lever above to open a pair of shutters and grant access to a room with a civilian inside. Use mind control to make the civilian step on the button. Now pull the lever to get the tenth minikit.