There are 33 Trophies that can be collected.

Bronze

Stay Squeeky Clean
Complete the "Path of Death" on Florana without taking any damage

Monkeying Around
Hit Skrunch the monkey twice with your wrench on the Starship Phoenix

Reflect on How to Score
Kill 25 enemies with the Refractor on Marcadia

Search for Sunken Treasure
Destroy all underwater crates on Planet Aquatos

Eight The Champion
Complete all 8 Gauntlet Challenges on Annihilation Nation

Flee Flawlessly
Complete any Gauntlet Challenge without taking any damage

Hit the Motherload
Collect all 101 Sewer Crystals on Aquatos

Bugs to Birds
Convert 15 Blood Flies into Ducks on Daxx

Get to the Belt
Jump up onto the Asteroid Belt on the Obani Moon

Feeling Lucky?
Hit the jackpot on a slot machine in Holostar Studios

It was a very good year…
Destroy a Blimp flying around Metropolis

Suck It Up
Kill 40 enemies with the Suck Cannon at the Crash Site

Go For Hang Time
Get 2 seconds of air with the Turbo-Slider on Aridia

Break the Dan
Destroy the Snowman at Qwark’s Hideout

Penicillin Anyone?
Infect 30 enemies with the Infector Gadget on Mylon

Zap Back At Ya’
Kill 10 enemies with your Refractor Gadget on Aridia

These things keep comin’!
Collect 1 Million Bolts

Keep the Temperature Low
Get the Snowman Skin

Silver

Nefarious No More
Defeat Dr. Nefarious in the Final Battle

Strive for Arcade Perfection
Get all Qwark Tokens (100%) on all Vid Comics

Bash the Bug
Defeat Scorpio with only the wrench in Annihilation Nation

Qwarktastic Win
Complete the Qwarktastic Battle in Annihilation Nation

RY3NO
Attain the RY3NO Gadget

Nano Finder
Get Ratchet’s Nanotech up to 200 (Maxed out!)

Mini Ratchet
Find the Ratchet Trophy

Secret Agent Clank
Find the Clank Trophy

They Never Stop Comin’!
Collect 10 Million Bolts

Gold

Thorough
Obtain all 40 Titanium bolts

Skill Master
Attain All 30 Skill Points

Omega Man
Get all the Omega Weapons including the Rhynocerator

Friend of the Rangers
Complete every battle mission

Biobliteration
Defeat the Biobliterator to complete the game

Platinum

Hero of the Galaxy
Obtain All Ratchet and Clank: Up Your Arsenal trophies

http://bit.ly/KOg5O1

No problem, I love the series so it seemed fitting to add something to the site for it. All the trophies can be found on the link so making the secret ones non-secret. I think the game has been delayed in EU till 27th June though unfortunately.