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