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 ;-) :
Shoot the target of the machine, follow the droid to the Minikit
Hit 4 sand moles
Use the power socket on the crashed space ship with BB8
Cut the vent with the lightsaber
Use the power socket with BB8 (again)
Use Ackbar to dive into the pool
(Unlock Ackbar at the "Poe to the Rescue" Mission)
Jump down from where the pool is, activate the boxing ring with BB8 and win the boxing.
Blow up 4 Silver Lego structures
Hover up where the first Silver Lego blowup is
Hover to the back over the gap to get the Minikit in the air.
At the top left, blow open the gate with Silver Lego blowup and play "Wheel of Fortune"