The first bounty hunter door has platforms that lead to a Mini-kit. If you have a blaster character, jump on the first platform and shoot to destroy it. To stop the color glitching, play the level no more than two times without using colorful characters; nor changing characters with the L or R (do it by touchscreen).
On Episode V, go to the Cloud City level and defeat Darth Vader for the first time. After that, you will be playing as Leia, Lando, R2, and Chewy again. Find and rebuild C-3PO, then make sure your partner is C-3PO. Run around fighting off some troopers and, soon as you see C-3PO without arms and one leg, shoot him one more time. Note: This will not work if the troopers do it. He will return, but all you will see is his shadow on the ground. After a few seconds, he will be visible again. Repeat this as many times as desired.
Collect the ten hidden Mini-kit parts in one of the following levels to unlock the corresponding ship for viewing. The ship can be seen in the room marked with the Mini-kit icon. Afte collecting all 300 Mini-kits, a bonus Mini-kit of the Rebel Blockade Runner will become unlocked:
There is a mini-kit that requires you to use a gun-holding character's grappling hook twice. If you do not destroy the plant closest to the ledge of the first grappling hook, jump on it to the ledge and up the second ledge to get the mini-kit in Story mode.
While playing two player, go outside the cantina and build or find a car. Have player 1 get in the car, then player 2 should press TRIANGLE near the car whie player 1 is in the car. Soon player 2 will vanish. When that happens, player 1 should get out the car. Then, player 2 can drive around in a car with no driver.