Clear all missions on Emerald Knight difficulty.
Purchase all Ring Power upgrades.
Purchase all upgrades.
Clear a mission in Co-op.
Purchase all Ring Surge upgrades
Make Green Lantern dizzy 10 times.
Complete the game on poozer or enforcer difficulty.
Clear mission 10.
Purchase all Attack upgrades.
Clear mission 9.
Defeat 20 enemies with Jet Fighter.
Collect all 5 Blue Meteorites.
Collect all 9 Green Meteorites.
Clear mission 8.
Gain experience level 10.
Clear mission 7.
Purchase all Construct upgrades.
Defeat 10 enemies with Piston Blitz.
Clear mission 6.
Defeat 20 enemies with Mech Suit.
Clear mission 5.
Clear mission 4.
Defeat 20 enemies with Missile Pack.
Defeat 10 enemies with Baseball Bat.
Use Ring Surge 10 times.
Defeat 10 enemies with Rocket Punch.
Defeat 10 enemies with Hover Mines.
Clear mission 3.
Gain experience level 5.
Defeat 10 enemies with Gatling Gun.
Defeat 10 enemies with Blade Whip.
Defeat 20 enemies with Mace Storm.
Clear mission 2.
Clear Mission 1.
Launch 20 enemies.
Defeat 10 enemies with War Hammer.
Defeat 10 enemies with Ring Blaster.
Perform a 99 hit combo.
Perform a 50 hit combo.
Perform a 20 hit combo.