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 ;-) :
Destroy the light blue pipes at the helipad and build a ramp for Quicksilver. Use it.
Use Loki at the water puddle right at the start to build a plank. Jump down.
Save 3 people in the water with Vision.
Down at the container area, destroy the box with Ultron and drive the car to the Minikit. // -- ugh... my driving is awful...
Red Brick -- Video Time 01:51
The collector is on the top right after the containers. He wants some glasses. You can get those by logging in as a Hydra Agent (e.g. Doctor List) at the very top right of the level at the End of Part A.
Next to the collector. Mind control the guy with Vision and pull the lever. Then put out the fire with Captain America.
Character Token: Baroc -- Video Time 03:15
Repair the machine to the far right and go down to pick up the Token.
Part B -- Video Time 03:55
Character: Winter Soldier -- Video Time 03:55
Destroy the window with Hawkeye and get the Token.
Stan Lee in Peril -- Video Time 04:10
Use Hulk on the green handles and build together a ladder.
Destroy 4 silver barricades with Ironman.
Destroy the bee hives to the right, build an acorn and destroy that too.
Use the Captain America Shield platform to destroy the golden Captain America statue and pick up the Minikit before you continue with the story.
Part C -- Video Time 05:30
Use the pink Mini Access with Vision, destroy the golden Lego bricks and build the Minikit.
At the last part of the fight, at the bottom, there is a hidden area to discover with Black Widow.
Character: Falcon (Classic) -- Video Time 06:14
Use Vision's telekinesis to turn the 2 lights green. // ..this was tricky. Need to be in the exact position...