Complete the following tasks to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", then "My profile", then "View all my games", then the game and view stats.
A Present: Take the Custom Pistol from the Locked Box.
Antibiotic: Kill 100 Mutants.
Back to the Past: See all Visions in the Dead City.
Big Momma: Kill the Rhino.
Bloodlust: Kill all the Reds on the THE CHASE level.
Businessman: Make 100 Purchases.
C'est la vie: Destroy D6.
Clean Escape: Escape the chasing Nazis on the REICH level without being caught once.
Commando: Rescue the Women and Children on the BANDITS level without raising alarm.
Derailed: Kill all armed enemies on the REVOLUTION level, including all reinforcements.
Diver: Fall in the Swamp 10 times.
Edison: Turn off 40 Lights without breaking them.
Equipped: Find all Equipment Stashes in the swamps.
Ever Vigilant: Disarm 10 Traps.
First Draft: Write 10 of Artyom's hidden Diary pages.
Forest Guardian: Save the Bear from the Watchmen after the fight.
Forgotten: Find the Hidden Ammo in the abandoned part of the station on the QUARANTINE level.
Freedom!: Free the Prisoners.
Gunslinger: Kill at least one Enemy with each Weapon available in the game.
Inferno: Set 2 Enemies on fire at once.
Invisible Intruder: Complete the SEPARATION level without killing or raising alarm.
Invisible Savior: Complete the FACILITY level without killing or raising alarm.
Invisible Soldier: Complete the REVOLUTION level without killing and raising an alarm.
Mouse: Complete the ECHOES level undetected by the Watchmen.
Musician: Use all Musical Instruments in the game.
No shooting allowed: Kill 10 enemies in a row with Throwing Knives.
Nobody's Home: Ignore the Phone Call in the Anomaly.
Not A Rabbit: Finish the ASHES level without taking a hit.
Patron of the Arts: Watch the entire Theater Show.
Published: Complete all 43 of Artyom's hidden Diary pages.
Rabbit: Complete training sequence.
Rain Man: Complete the BRIDGE level without a kill.
Ranger Elite: Complete the game in Ranger Mode.
Redemption: Save D6.
Reunion: Find and return the crying child's Teddy Bear.
Revelation: Make Moskvin tell the truth with help from the Dark One.
Revenge: Kill Pavel.
Savior: Remove your mask when Lesnitsky demands it.
Scram: Kill all Watchmen before they reach the Railcar.
Secret: Find out about the Reds' plans.
Shadow: Stealthily kill 15 Enemies.
Shadow Ranger: Complete the game without killing any Humans unless forced to.
Soldier: Kill 100 Human Enemies.
Soup: Kill 5 Shrimp with Grenades.
Survivalist: Complete the game in Ranger Hardcore.
Tesla: Break 50 Lights.
Tortoise: Make 10 Spiders flip belly-up.
True Spartan: Hold the Platform without dying.
Van Helsing: Kill a Demon with the Helsing.
Walking Bank: Collect 1000 Military Rounds.
Weapon Smith: Install all possible Customizations for a Weapon.
Within a Hair of Death: Escape from the Red Line.
Arachnophobia: Kill 20 spiders with your flame thrower.
Artifact: Find 30 artifacts.
Developer: Spend 3 hours on the DEVELOPER level.
Eagle Eye: Kill more Watchmen that Artyom does.
Hail Reich!: Complete the ASSAULT INFANTRY level.
Heads Up!: Complete the PAVEL level.
Homo Homini Lupus Est: Kill all the enemies by yourself.
Hunting: Kill 20 Nosalises and the Big Momma.
Kshatriya: Complete the KSHATRIA level.
No Way Out: Complete the KHAN level.
Saboteur: Complete the SNIPER TEAM level.
Safe Cracker: Open 8 safe boxes on the PAVEL level.
Sniper: Kill 10 enemies with headshots using your sniper rifle.
Specialist: Complete the SHOOTING RANGE and ARENA.
Test Ñomplete: Complete the TOWER level.
The Sunset of Hope: Complete the ANNA level.
Through the Fire: Complete the SPIDER LAIR level.
Willpower: Complete at least one HUGE mission.
Diary Page Collectible Locations:
Find ALL 43 of the hidden diary pages to earn the 'Published' Achievement. The diary pages are collected automatically and you can keep track of what you need to get during the game by going to the 'Diary' option in the 'Pause' menu. You can quit a chapter immediately after finding a diary without losing any progress. Below is a video that will show you the location of each of the diary pages.
#1 - Sparta - 0:05
#2 - Ashes - 0:26
#3 - Pavel - 0:49
#4 - Reich - 1:13
#5 - Separation - 1:30
#6 - Separation - 1:54
#7 - Facility - 2:18
#8 - Torchlight - 2:35
#9 - Torchlight - 2:52
#10 - Echoes - 3:18
#11 - Echoes - 3:32
#12 - Bolshoi - 3:47
#13 - Bolshoi - 4:00
#14 - Revolution - 4:16
#15 - Revolution - 4:37
#16 - Revolution - 5:09
#17 - Revolution - 5:35
#18 - Regina - 5:55
#19 - Bandits - 6:26
#20 - Bandits - 6:44
#21 - Dark Waters - 6:58
#22 - Venice - 7:14
#23 - Venice - 7:40
#24 - Sundown - 8:05
#25 - Nightfall - 8:25
#26 - Contagion - 8:56
#27 - Quarantine - 9:23
#28 - Quarantine - 9:44
#29 - Khan - 10:07
#30 - The Chase - 10:27
#31 - The Crossing - 10:39
#32 - The Crossing - 11:01
#33 - Bridge - 11:23
#34 - Depot - 11:39
#35 - The Dead City - 12:03
#36 - The Dead City - 12:24
#37 - Red Square - 12:39
#38 - Red Square - 12:55
#39 - The Garden - 13:28
#40 - The Garden - 13:46
#41 - Polis - 14:05
#42 - D6 - 14:22
#43 - D6 - 14:38
Unlock Alternate Ending:
The 'Redemption' ending can be viewed when you complete the game with a majority of good moral choices. Whenever a good moral choice has been made there will be a flash of light. You will view the 'Cest La Vie' ending if you did not make enough good moral choices.
Doing exactly what NPCs instruct
Finding hidden ammo caches on 'Quarantine'
Being generous with bullets (give to beggars)
Listening to dialogue in populated areas (exploration)
Returning the crying child's teddy bear in 'Venice'
Complete 'Facility' without killing humans
Complete 'Revolution' without killing humans
Complete 'Separation' without killing humans
Complete 'Bridge' without killing humans
Seeing all visions in 'Dead City'
Sparing surrendering soldiers
Playing musical instruments
Rescuing women and children
Listening to NPC stories
Killing surrendering soldiers
Stealing in populated areas