Here is the full list of all 47 Tom Clancy's Splinter Cell Blacklist achievements worth 1,000 gamerscore.
Saved the hostages in the Transit Yards
Used the Tri-Rotor to disable a security device
Completed a single player mission undetected
Hid 5 bodies in containers
Mastered Mark & Execute
Completed the single player campaign without killing anyone as Sam Fisher
Completed every single player mission on Perfectionist difficulty
Completed every single player mission on Realistic difficulty
Stopped the Blacklist
Captured 20 High-Value Targets
Snuck up & stole the shield from a Shielded Infantryman
Collected 24 Dead Drop flash drives
Hacked 23 Blacklist Laptops
Completed LNG Terminal
Survived the attack on Paladin
Completed Detention Facility
Mastered Panther playstyle
Completed Transit Yards
Completed Special Missions HQ
Mastered Assault playstyle
Completed all of Andriy Kobin's 4th Echelon Missions
Mastered Ghost playstyle
Completed all of Charlie Cole's 4th Echelon Missions
Completed Abandoned Mill
Completed all of Isaac Briggs 's 4th Echelon Missions
Won the COOP interrogation in VORON Station
Completed a COOP mission with a teammate
Dual Executed a helmeted enemy
Completed Private Estate
Completed all of Anna Grímsdóttir's 4th Echelon Missions
Paladin fully upgraded
Completed American Consumption
Stealthily took down an enemy who'd been lured by sound
Completed Insurgent Stronghold
Completed Safehouse
Unlocked a Merc's Light Machine Gun
Assisted teammates in 10 Spies vs Mercs objectives
Completed a Spies vs Mercs Weekly Challenge
Completed a Daily Challenge
Fully upgraded one gun
Unlocked a custom loadout slot for Spy or Merc
Won a match in every Spies vs Mercs game mode
Achieved Rank 10 in Spies vs Mercs
Captured a control point in a Spies vs Mercs Uplink Control match
Carried home the intel in a Spies vs Mercs Extraction match
Hacked a terminal in a Spies vs Mercs SvM Blacklist or SvM Classic match
Logged into ShadowNet for the first time