Here is the full list of all 51 METAL GEAR SOLID 2: Sons of Liberty - there are Master Collection Version achievements.
Hear Johnny's bowel noises in two locations
Earn the title of Big Boss
Get the Tanker stealth suit
Get the Plant stealth suit
Get the infinity wig
Get the bandana
Collect every type of weapon in the Plant
Tranquilize 100 enemies
Destroy 5 cameras
Beat 30 enemies unconscious
Break the neck of 30 enemies
Send Otacon a picture of the marine with no pants
Take a clear photograph of the ghost image in Hold No. 2
Down an enemy with steam from a pipe
Attain grip level 3
Disorient an enemy with a cloud of smoke from a fire extinguisher
Complete at least one of the Snake Tales
Complete Boss Survival
Watch Rose kill Raiden on a rooftop
Watch something in the Casting Theater
Beat the Tanker and Plant chapters on any difficulty
Clear the game without killing anyone
Clear the game without entering Alert Mode (not including events where Alert Mode is mandatory)
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
Acquire the digital camera
Find Emma Emmerich
Defeat Vamp
Meet President James Johnson
Destroy the AV-88 Harrier II
Learn the location of the president
Collect all boxes
Defeat Fatman
Read all the pages in the Screenplay Book
Place first in 50 different VR/Alternative missions
Hold up 30 enemies
Lure a guard with a girlie magazine
Complete a VR or Alternative mission
Survive Fortune's attack
Shoot an enemy radio
Learn how to defuse C4 bombs from Peter Stillman
Get sea lice all over your rations
Meet Revolver Ocelot
Collect every type of weapon on the Tanker
Put an enemy in a locker
Kiss a poster in a locker
Defeat Olga Gurlukovich
Get caught by Otacon stimulating yourself
Collect a dog tag