As I said, each regular "play as such and such", like Bane or Adam West, will pop. Just load up the save, hold triangle go to the lego guy with + next to him & choose your desired character. As Bane though, load him & press triangle numerous times until he stops getting bigger the "Bane & Gain" trophy will then pop.
"Mirror... MIRROR!" will pop after you make yourself a character & use them.
Travel to Nok & fight your Buddy on that planet (not the jailhouse), & "Nok Nok!" will pop.
More to come.