Full list of all 73 Fallout 3 trophies - 41 bronze, 24 silver, 7 gold and 1 platinum.
The base game contains 51 trophies, and there are 5 DLC packs containing 22 trophies.
Collect all other 50 Trophies for this Trophy
Collected 20 Vault-Tec Bobbleheads
Won 50 Speech Challenges
Reached Level 14 with Good Karma
Reached Level 14 with Bad Karma
Reached Level 8 with Neutral Karma
Completed "Reilly's Rangers"
Hacked 50 terminals
Collected 10 Vault-Tec Bobbleheads
Completed "The Nuka-Cola Challenge"
Kill all the Super Mutant Behemoths
Completed "Strictly Business"
Reached Level 8 with Bad Karma
Completed "Blood Ties"
Completed "Oasis"
Made one of every custom weapon
Completed "You Gotta Shoot 'Em in the Head"
Completed "Tenpenny Tower"
Completed "Head of State"
Discovered 100 locations
Completed "Agatha's Song"
Completed "The Superhuman Gambit"
Completed "Big Trouble to Big Town"
Reached Level 20 with Bad Karma
Reached Level 20 with Neutral Karma
Completed "Rescue from Paradise"
Completed "Stealing Independence"
Completed "Trouble on the Homefront"
Picked 50 locks
Reached Level 20 with Good Karma
Completed "The Replicated Man"
Completed "The Wasteland Survival Guide"
Killed 300 creatures
Completed "Galaxy News Radio"
Killed 300 people
Completed "Those!"
Completed "Take it Back!"
Completed "The American Dream"
Completed "Finding the Garden of Eden"
Reached Level 14 with Neutral Karma
Completed "Picking up the Trail"
Completed "The Waters of Life"
Completed "Tranquility Lane"
Completed "Scientific Pursuits"
Reached Level 8 with Good Karma
Completed "The Power of the Atom"
Placed a grenade or mine while pickpocketing
Completed "Following in His Footsteps"
Completed "Escape!"
Took the G.O.A.T.
Got the Pip-Boy 3000
Reached Level 30 with Neutral Karma
Reached Level 30 with Bad Karma
Reached Level 30 with Good Karma
Completed "Who Dares Wins"
Completed "Shock Value"
Completed "Death from Above"
Collected all Alien Captive Recordings
Completed "This Galaxy Ain't Big Enough…"
Completed "Among the Stars"
Completed "Not of This World"
Completed "Operation: Anchorage!"
Completed "Paving the Way"
Completed "The Guns of Anchorage"
Completed "Aiding the Outcasts"
Discovered all locations within Point Lookout
Completed "A Meeting of the Minds"
Completed "Walking With Spirits"
Completed "The Local Flavor"
Completed "Free Labor"
Completed "Unsafe Working Conditions"
Found All 100 Steel Ingots
Completed "Into The Pitt"