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