Here is the full list of all 46 Metal Gear Solid 2 trophies - there are 36 bronze, 5 silver, 4 gold and 1 platinum.
Collect all trophies
Clear the game without entering alert mode (not including events where alert mode is mandatory)
Send Otacon a picture of the marine with no pants
Take a clear photograph of the ghost image in Hold No. 2
Kill 5 enemies with pipe steam
Collect all dog tags in the Plant chapter to obtain the Blue Wig
Get the orange wig
Disorient an enemy with a cloud of smoke from a fire extinguisher
Get the Plant stealth suit
Get the brown wig
Hear Johnny's bowel noises in two locations
Collect all boxes
Complete all VR and Alternative missions
Beat 30 enemies unconscious
Get the Tanker stealth suit
Get the bandana
Shoot 10 enemy radios
Place first in 50 different VR/Alternative missions
Tranquilize 100 enemies
Complete a VR or Alternative mission
Complete all Snake Tales
Destroy 15 cameras
Break the neck of 30 enemies
Lure a guard with a girlie magazine
Complete Boss Survival
Watch Rose kill Raiden on a rooftop
Beat the Tanker and Plant chapters on any difficulty
Catch a glimpse of Vamp standing in the streets of New York during the end cinematic
Defeat Solidus Snake
Defeat Metal Gear RAY
Befriend Olga Gurlukovich
Find Emma Emmerich
Defeat Vamp
Meet President James Johnson
Destroy the AV-88 Harrier II
Learn the location of the president
Defeat Fatman
Acquire the digital camera
Learn how to defuse C4 bombs from Peter Stillman
Put an enemy in a locker
Meet Revolver
Attain grip level 3
Defeat Olga Gurlukovich
Get caught by Otacon stimulating yourself
Kiss a poster in a locker
Collect a dog tag