Easily done by yourself if you have 2 controllers on the same screen in local play.
First you will need 10 different 2 players MC(those with 2 squares are 2 players).
Then what you want to do is set 4 different MC, take any stage, do all 4 of them, with main account you need to hold the O button and with 2nd controller push O.
Once all 4 are done you can push start and select Exit Game.
Rinse and repeat till all ten 2 players MC are done and pop goes the trophy