Queen's Quest 2: Stories of Forgotten Past

Most of the HO scenes in the game have set item locations, so you could theoretically unlock this on any of them. However, I believe the HO scene Deep in the Hole is the best one to attempt this trophy, as it's a very small search area and requires minimal item combinations.

Note that some of the objects I've circled, you click on to move and still need to pick up the piece under/behind/whatever the object. When you've found all pieces, pick up the crown from the box.