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