Here is the full list of all 35 Crysis 2 Remastered achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Kill 4 enemies in a row with headshots
Assimilate alien tissue at the crash site
Complete In at the Deep End
Escape the Battery Park evacuation center
Find Nathan Gould
Infiltrate the CELL facility at Wall Street
Infiltrate the alien hive
Assist the Marines in Madison Square
Reach the Hargreave-Rasch building
Assist the evacuation at Bryant Park
Defend Central Station
Complete the evacuation at Times Square
Locate Jacob Hargreave
Reach Central Park
Finish the single player campaign on any difficulty
Complete 6 levels on Veteran difficulty
Complete 12 levels on Veteran difficulty
Complete 6 levels on Post-Human Warrior difficulty
Complete 12 levels on Post-Human Warrior difficulty
Complete the single player campaign on Veteran difficulty
Complete the single player campaign on Post-Human Warrior
Stealth kill 25 enemies
Find all New York Souvenirs
Kill 10 enemies by throwing an object at them
Kill 10 enemies with grab and throw
Kill 20 enemies with the Microwave cannon
Kill two enemies with a single bullet
Kill at least 3 enemies with a single grenade
Kill 5 enemies while sliding
Kill a CELL operator with a giant donut in Lower Manhattan
Throw an alien down the sinkhole in Dark Heart
Keep all marines alive during the rescue in Semper Fi or Die
Scan all of Richard Morgan's books in the NY public library
Re-route the power in Eye of the Storm without being detected
Break the speed limit in front of 10 speed cameras