Complete the following tasks to unlock PlayStation 3 trophy rewards.

Trophy	How to unlock
A Prickly Pair (Bronze)	Had a conversation with a cactus.
Crackpot Mended (Silver)	Restored Edna's memory.
Emmett Finds His Muse (Silver)	Emmett completes his spectacular failure the Expo.
False Impressions (Bronze)	Impersonated three people over the phone.
Full Fair (Bronze)	Get your money's worth at the Expo.
Get it on Tape (Bronze)	Recorded everyone at the Expo.
Green Gobblin' (Bronze)	Treated Desert Edna to an algae cake.
Moonwalker (Bronze)	Busted a move, 80's style.
No Backups (Bronze)	Complete the glass house maze without going back up the stairs.
Raising the Bar (Silver)	Prevented the Great Hill Valley fire.
The Future isn't Writtten (Gold)	Returned home.
Two-Up (Bronze)	Defuse the standoff while climbing to the second floor no more than two times.