There are 12 Trophies that can be collected.

Bronze

Unionized
Help Sam become a unionized waiter and pass the "Wipeout" entrance exam.

Anointed By The Feet
Have Max be anointed by the Feet.

The Image of Max
Make the image of Max appear in the underground cave.

Eureka! Banang!
Perform a miracle by turning water into Banang.

Sandwich Seller
Offer the granite sandwich to everyone on the island.

Kids Say The Darndest Things
As young Sam & Max, talk to every character possible.

Hail To The High Priest!
Take the Crown of Socks and crown Max as the new high priest.

Silver

Freelance Police Work Is Never Done
Save Sybil from the giant Bermuda Triangle. Well, at least make a good attempt.

Let's make some music!
Help Baby Glenn Miller create his latest hit song.

High Priest Max
Make Max the High Priest of the ocean chimps.

BAGPIPE OBLITERATION ULTIMATE!
Receive all DeSoto decals in this episode by completing all levels of "Pimp Le Car Music Challenge" and all bonus decals.

Gold

Moai Better Blues
Complete Episode 2 – Moai Better Blues

http://www.ps3trophies.com/forums/ps3-trophy-news/4251-sam-max-beyond-time-space-episode-2-moai-better-blues-trophy-list.html