Nick_Arrow

Combo Professional Achieved 50 consecutive hits with the Combo Meter equipped

Knack Challenger Completed all chapters on Hard difficulty or higher

Doctorate Acquired all of the Gadgets

Under The Radar You flew under all the main bridges in the game.

Total Victory Defeated a boss without taking damage

That's How We Roll! You unlocked the special ability of Brucie's helicopter ride.

Sightseer You have taken all variations of the helicopter tours of Liberty City.

Gobble Gobble You got a turkey in 10-pin bowling.

Ruby Medal Cleared a chapter as Vampire Knack

Aqua Medal Defeated the Chieftain's Mech using Brittle Knack

Dial B For Bomb You unlocked the special ability of Packie's car bomb placement.

Cleaned The Mean Streets You caught 20 criminals through the police computer.

Gladiator Completed a Coliseum Attack stage

Chain Reaction You exploded 10 vehicles in 10 seconds.

King of Adventure Discovered all of the treasure chests

Dynamic Play Completed a chapter only using Super Moves on enemies and without dying once

Rolled Over You managed 5 car rolls in a row from one crash.

Manhunt You completed the most wanted side mission.

Perfect Action Completed a stage without taking any damage on Hard difficulty or above

Amethyst Medal Defeated the Giant Orb using Dark Knack

Sunstone Medal Defeated Katrina's Mech using Sunstone Knack

Finish Him You completed 10 melee counters in 4 minutes.

Emerald Medal Defeated Gundahar's Robot using Massive Knack

Liberty City (5) Your friends all like you above 90%.

King of Battle Achieved five-star ranks in all Coliseum Attack stages

Speed King Achieved five-star ranks in all Time Attack stages

Crystal Relic Master Unlocked all upgraded Knack characters

Diamond Medal Defeated all bosses using Diamond Knack

Knack Master Completed all chapters on Very Hard difficulty

TLAD: The Lost Boy Become leader of The Lost. (The Lost and Damned)

Top Of The Food Chain You successfully killed 20 players with a pistol in a deathmatch.

Ultimate Knack Received all trophies

You Got The Message You delivered all 30 cars ordered through text message.

Join The Midnight Club You won a multiplayer race without damaging your vehicle too much.

No More Strangers You've met all the random characters.

Teamplayer You killed 5 opposing team members.

Genetically Superior You came first in 20 singleplayer street races.

TLAD: Easy Rider Finish the story. (The Lost and Damned)

TBoGT: Diamonds Forever Complete the Trinity. (The Ballad of Gay Tony)

Dare Devil You completed all the unique stunt jumps.

TBoGT: Maestro Finish the Ballad. (The Ballad of Gay Tony)

Endangered Species You collected every hidden package in the game.

TLAD: Full Chat Build Terry and Clay's toughness to 100%. (The Lost and Damned)

Top The Midnight Club You won 20 different multiplayer standard races.

Key To The City You completed GTA IV to 100%.

TBoGT: Four Play Hit a flag with a golf ball four times. (The Ballad of Gay Tony)

Taking It For The Team You were on the winning team in all multiplayer team games.

TBoGT: Adrenaline-Junkie Freefall for the longest possible time. (The Ballad of Gay Tony)

TLAD: Get Good Wood In the bike races, whack off 69 bikers with a bat. (The Lost and Damned)

Fly The Co-op You completed "Deal Breaker", "Hangman's NOOSE" and "Bomb da Base II" in time.