There are 13 Trophies that can be earned in this title.

Bronze

Sweaty Palms
Register your name

Is It Getting Hot in Here?
Calibrate your voice

Original Sinner
Register a lie in a standard game

Coming Clean
Register a truthful response in a standard game

Full House
8 players register for a game of Truth or Lies®

You Can Breathe Out Now
Complete a game of Truth or Lies®

Judge and Jury
Answer a Hot Seat question

Close to Home
A player answers a Hot Seat question truthfully

Is That So?
A player answers a Hot Seat question with a lie

Silver

A Bad Bunch
A player wins a round with a score of 1000 points or lower

Dubious
A player receives most truthful and least truthful in a single round

Senior Interrogator
Answer 10 Hot Seat questions

Gold

Chief Interrogator
Answer 20 Hot Seat questions

http://www.ps3trophies.org/game/truth-or-lies/trophies/