How to Get 'Synergy'...
	Various Trophies...

To get Synergy (Clear a mission in Co-op) Achievement / Trophy, if you don't have anyone to play with, or if you want to do it alone, just play Mission 2. It is a flying mission so you don't need to move the other player.

To unlock PlayStation 3 trophy rewards, complete one of the following tasks!

Trophy	How to unlock
All in the Wrist (Bronze)	Defeat 10 enemies with Blade Whip.
Around the World (Bronze)	Defeat 20 enemies with Mace Storm.
Beware My Power! (Bronze)	Use Ring Surge 10 times.
Big Beat Down (Bronze)	Defeat 20 enemies with Mech Suit.
Big Spender (Gold)	Purchase all upgrades.
Biot (Bronze)	Clear Mission 7.
Blunt Justice (Bronze)	Defeat 10 enemies with War Hammer.
Central Battery (Bronze)	Clear Mission 3.
Complete Control (Silver)	Purchase all Ring Power upgrades.
Corruption (Bronze)	Clear Mission 6.
Demolitionist (Bronze)	Defeat 10 enemies with Hover Mines.
Distress Call (Bronze)	Clear Mission 4.
Diversion (Bronze)	Clear Mission 2.
Emerald Knight (Gold)	Clear all missions on Emerald Knight difficulty.
Emerald Warrior (Silver)	Complete the game on Poozer of Enforcer difficulty.
Fan Favorite (Bronze)	Defeat 10 enemies with Rocket Punch.
Favorite Pastime (Bronze)	Defeat 10 enemies with Baseball Bat.
Fear This! (Platinum)	Collect all trophies.
Full Burn (Silver)	Purchase all Ring Surge upgrades.
Get Dizzy Yall (Bronze)	Make Green Lantern dizzy 10 times.
Hal Knows Jets (Bronze)	Defeat 20 enemies with Jet Fighter.
Hot Pursuit (Bronze)	Clear Mission 8.
Invasion (Bronze)	Clear Mission 1.
Just Getting Started (Bronze)	Perform a 20 hit combo.
Lights Out (Bronze)	Defeat 10 enemies with Piston Blitz.
Locked and Loaded (Bronze)	Defeat 10 enemies with Gatling Gun.
Master Blaster (Bronze)	Defeat 10 enemies with Ring Blaster.
Might Makes Right (Silver)	Purchase all Attack upgrades.
Mogo is Proud (Silver)	Collect all 9 Green Meteorites.
Not a Poozer (Gold)	Gain experience level 10.
On a Roll (Silver)	Perform a 50 hit combo.
Possession (Bronze)	Clear Mission 5.
Rank Up (Silver)	Gain experience level 5.
Return to Oa (Bronze)	Clear Mission 10.
Shut Your Mouth (Gold)	Perform a 99 hit combo.
Synergy (Bronze)	Clear a mission in Co-op.
Targets Acquired (Bronze)	Defeat 20 enemies with Missile Pack.
There is Hope (Silver)	Collect all 5 Blue Meteorites.
Ultimate Weapon (Bronze)	Clear Mission 9.
What Goes Up... (Bronze)	Launch 20 enemies.
Willpower (Silver)	Purchase all Construct upgrades.