Сomplete at least one HUGE mission.
Complete the TOWER level.
Find 30 artifacts.
Complete the KSHATRIYA level.
Complete the SNIPER TEAM level.
Kill 10 enemies with headshots using your sniper rifle.
Complete the KHAN level.
Kill 20 Nosalises on the KHAN level.
Kill 100 enemies with heavy weapons.
Complete the ASSAULT INFANTRY level.
Сomplete the ANNA level.
Kill more Watchmen that Artyom does.
Open 8 safe boxes on the PAVEL level.
Complete the PAVEL level.
Spend 3 hours on the DEVELOPER level.
Complete the SHOOTING RANGE and ARENA.
Complete the SPIDER LAIR level.
Kill 20 spiders with your flame thrower.
Complete the game in Ranger Mode.
Complete the game in Ranger Hardcore.
Continue playing to unlock this secret achievement.
Use all Musical Instruments in the game.
Disarm 10 Traps.
Collect 1000 Military Rounds.
Kill 100 Human Enemies.
Kill at least one Enemy with each Weapon available in the game.
Find all Equipment Stashes in the swamps.
Kill 5 Shrimp with Grenades.
Set 2 Enemies on fire at once.
Stealthily kill 15 Enemies.
Kill all Watchmen before they reach the Railcar.
Make 10 Spiders flip belly-up.
Complete the ECHOES level undetected by the Watchmen.
Finish the ASHES level without taking a hit.
Kill all the Reds on the THE CHASE level.
Fall in the Swamp 10 times.
Kill all armed enemies on the REVOLUTION level, including all reinforcements.
See all Visions in the Dead City.
Kill a Demon with the Helsing.
Complete the BRIDGE level without a kill.
Kill 10 enemies in a row with Throwing Knives.
Complete the game without killing any Humans unless forced to.
Hold the Platform without dying.
Complete all 43 of Artyom's hidden Diary pages.
Install all possible Customizations for a Weapon.
Break 50 Lights.
Find the Hidden Ammo in the abandoned part of the station on the QUARANTINE level.
Kill 100 Mutants.
Turn off 40 Lights without breaking them.
Find and return the crying child's Teddy Bear.
Rescue the Women and Children on the BANDITS level without raising alarm.
Make 100 Purchases.
Complete the REVOLUTION level without killing and raising an alarm.
Watch the entire Theater Show.
Write 10 of Artyom's hidden Diary pages.
Complete the FACILITY level without killing or raising alarm.
Take the Custom Pistol from the Locked Box.
Complete the SEPARATION level without killing or raising alarm.
Escape the chasing Nazis on the REICH level without being caught once.
Complete training sequence.