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