Minikits in order as they appear:
Defender: There is a silver box. Blow it up with Silver Lego Blowup, put together the grapple and use it. Then get the Minikit with Illumination
Defender: Use hacking on the terminal.
Destroy the solar panels. A platform for the DeLorean is hindden behind one of them. Use it with the DeLorean to get to Defender 2015.
Defender 2015: The Minikit is right at the start, next to the DeLorean platform.
Defender 2015: Use both terminals with technology to play defender. Shoot 30 spaceships to get the Minikit.
Defender 2015. Use stealth to sneak past the cameras and pick up the Minikit.
Defender 2015: Use the keystone device - the pink rift - and push the device into the slot. As soon as it is in, use boomerang. Same in the section below. Push the device into position and use the elemental keystone, electricity, or a character with that ability, on the power coil. Go back to the room where the keystone device is and use Sonic Smash on the cockpit of the spaceship to get the Minikit.
Gautlet Lvl 17: In the bottom left, you can either put together the Rainbow Lego Objects or fly over to the treasure room. This Minikit can just be picked up as you come in.
Gauntlet Lvl 17 Treasure Room: Use suspend ghost on the flying ghosts in front of the big gate and put the trap into the trap machine to open the gate. On the other side, use the portal keystone. Go through all portals so the pillars lower and you can go pick up this Minikit.
Continue to Gauntlet Lvl 28. There is a silver platform on the floor. Use Silver Lego Blowup, put the pieces together and go to Lvl 18.
Gauntlet Lvl 18. In the top left corner. No special abilities needed. Just fighting.
Super Sprint Track 2: There is a Silver Box on the side of the track. Use Silver Lego Blowup to open it. Pull the lever. Beat the time of 2 minutes on the track to get the last Minikit.
Rescue Robotron Hero
Robotron. Use Silver Lego Blowup to free the Robotron Hero.