Chapter 4: The Eravana - Freighter Shutdown
You can pick up the last four minikits here and bid goodbye to your new Rathtar pal.
You need to shoot down three bats for this minikit. The first one is to the left of the Rathtar and needs to be shot twice.
The second is to the right.
You have to poke around over on the far left to make any progress in the level, and when you do, look for the bat just above the stud wall.
Minikit #2 - Free Play Mode
When you're up at the top of the stud wall, use a character with a lightsaber to cut open the hatch on the left.
The minikit is behind it.
Minikit #3 - Free Play Mode
Destroy the objects to the immediate left of the Rathtar.
This will reveal some pipes that you can pull out of the way with the dark force.
You can now grab the minikit.
Head over to the right side of the area as part of the story to find the Crab Droid.
After solving the colour puzzle, send BB-8 through the obscured access hatch.
The minikit is on the other side.