It’s exam week, so I can’t afford to play much.
I unlocked a few easy trophies in Persona 4 Arena. There is one for executing Instant Kill move of every characters in Arcade Mode, and one for throwing Mystery Food X (and picking it up?) as Teddie.
As for Persona 4 Golden, I unlocked a trophy for finishing the special meal at Aika restaurant. It apparently requires me to finish reading a book about it first.