Full list of all 55 Grand Theft Auto IV achievements. It takes around 50-60 hours to unlock all of the achievements in the base game on Windows.
The base game contains 40 achievements, and there are 2 DLC packs containing 15 achievements.
Fly on all helicopter tours of Liberty City.
Fly underneath the main bridges in the game that cross water with a helicopter.
You must blow up 10 vehicles in 10 seconds.
Survive 5 minutes on 6 star wanted level.
Do 5 car rolls in a row from one crash.
Meet all random characters.
After meeting all possible friends, the ones left alive all like you above 90%.
Deliver all 30 cars ordered through text message.
Come first in 20 singleplayer street races.
Complete 10 melee counters in 4 minutes.
Complete 100% of the unique stunt jumps.
Collect every hidden package in the game.
Achieve 100% in "Game progress" statistic.
Complete the most wanted side missions from the police computer.
Capture 20 criminals through the police computer.
Unlock the special ability of buying guns from a friend.
Unlock the special ability of helicopter.
Complete all 9 assassin missions.
Unlock the special ability of phoning for a bomb to be placed.
Complete all 10 Exotic Export orders.
Complete the story missions in less than 30 hours.
Complete the final mission.
Complete mission "That Special Someone".
Reach a balance of $500,000.
Complete a taxi ride without skipping from one island to another.
Unlock the special ability of taxi.
Complete mission "I'll Take Her".
Complete all 10 package delivery jobs.
Beat the High Score in QUB3D.
In a darts game score 180 with 3 darts.
Lose a 4 star wanted rating by outrunning the cops.
Complete mission "Museum Piece".
Unlock all the islands.
Successfully date a girl to be invited into her house.
Beat a friend at pool.
Complete mission "Roman's Sorrow".
Score 3 strikes in a row, a turkey, in 10-pin bowling.
Do a wheelie lasting at least 500 feet on a motorbike.
Complete the mission "Uncle Vlad".
Complete the first mission.
Build Terry and Clay's toughness to 100%. (The Lost and Damned)
Finish the story. (The Lost and Damned)
Become leader of The Lost. (The Lost and Damned)
In the bike races, whack off 69 bikers with a bat. (The Lost and Damned)
Help Billy get his bike back. (The Lost and Damned)
Dance perfectly in both Tony's nightclubs. (The Ballad of Gay Tony)
Complete 25 drug wars. (The Ballad of Gay Tony)
Freefall for the longest possible time. (The Ballad of Gay Tony)
Finish the Ballad. (The Ballad of Gay Tony)
Complete all base jumps. (The Ballad of Gay Tony)
Complete the Trinity. (The Ballad of Gay Tony)
Hit a flag with a golf ball four times. (The Ballad of Gay Tony)
Win the L.C. Cage Fighters championship. (The Ballad of Gay Tony)
Score 100% in all missions. (The Ballad of Gay Tony)
Score 80% or above in all missions. (The Ballad of Gay Tony)