Easy Way to Solo "Social Animal"

[willythom88]

I didn't see this else where so I apologize if this is common knowledge.  As I was going for the Skill Rewards, I was doing the Tower Builder side level in the La Marionetta world, which you unlock from Flounders Jump and Jive.  Now, when you go into it, it will ask how many local players will be playing with you.  Select 4 (might work for less but idk).  Upon completing it, the trophy Social Animals popped, as well as the in game pin.  Now, I'm offline at the moment, due to there being no wifi nearby, so this may impact the outcome, but it did work for me.