All Collectibles in order as they appear. The characters used are just examples. Of course, you can use whatever character you like with the according abilities ;-) :
Part A: Resistance Base
Front left. Cut open the cupboard with a lightsaber
Open the gate with the Rebel Terminal, destroy the red boxes with the dark force.
Build 3 droids
Open the freezer door (story related) with the translation skill, use the Flametrooper (you have to buy him) to melt the ice over the Minikit.
In the Command Center, use BB8 at the Power Socket at the back.
Part B: Resistance Hangar
Take the elevator up to the top right. Use BB8 on the Power Socket.
Also there on top, remove the cracked Lego wall and use the hatch
At the bottom right area, where you free the 3 soldiers. Inside the room.
Still at the bottom right, far right. There is a puzzle at the wall. Solve it with the force
Build 3 spaceships
At the top left area. Use agility and the pole to get the Minikit