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