It is highly suggested the level you publish is a VS level to unlock another trophyTo publish a level you must first create a level, from the Pod enter your Pod Controller and open up 'Me' and 'My Moon'
Select any space and press

to enter Create mode. Once in create mode press

to open your Popit and then open your 'Tools Bag'.
Once in your Tools Bag press

6 times to go to the 7th page called 'Gameplay Controls' and change the first option from Cooperative to
Versus then press

to close.
Press

to return to the Pod and save the level, once back in your Moon press

and then click 'Publish'.
Once the level has been published you will unlock this and