Hohokum (EP)

This one is a bit convoluted. Go to the level with the Pottery/Vases you need to break and go to the bottom where there is a guy wandering around on a stone slab. Wait until he's walking and then bump him. He will zap you and you will turn into a particular shape. Make note of the shape by drawing it or taking a screenshot/photo, then repeat this two more times until you have been zapped into 3 different shapes. Next, go to the orange pop-nut level and along the bottom there are a bunch if grave stones with symbols on them. Find the stones with the symbols that match the shapes you were zapped into and bump into them (and only them). Once you bump all 3 correct stones another portal will open just above the area where these stones are. Enter this portal.

In the new level. go to the bottom and you will see the ice cream vendor in the bottom left. Go to the right and pick up all the people walking along and take them back to the ice cream vendor. Once you do this the trophy will pop. To exit the level, just fly up. Credit to Superbuu3 for the video.

https://www.youtube.com/watch?v=y3ai8kRY8LI