Boardwalk Showdown (Part 1)
You need to pick up three minikits while facing down the Indominus Rex.
While you're shooting the Indominus Rex, three Dimorphodons will perch on the buildings nearby. Shoot all three for the minikit. The first is to the left.
The second is to the right.
The third is behind the dino.
Minikit #2 - Free Play Mode
To the left of the Indominus Rex is a cracked wall. Break it down to get the minikit.
Minikit #3 - Free Play Mode
To the right is a locked door and broken Raptor switch. Destroy the bench nearby for the parts to fix it.
Once the doors are open, use a character with the illuminate ability, head inside, and turn the power on using the button on the left.
Pop through the small access hatch and into the room above. Scream to break the LEGO glass in the corner to get this minikit.
Main Street Showdown - Boardwalk Showdown (Part 2)
Just two minikits to go and that's it for the entire game. Woohoo!
Head to the right to find a broken vending machine.
Fix it up to receive the minikit.
To the left of the vending machine is a pile of poop. Dive in to find parts to make a minikit.
Congratulations! That's all one million minikits collected. Let's go and have a lie down. I think we deserve it.