No missable achievements (plus 49 unknown)
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Completed training sequence.
Chosen three primary weapons that use different ammo.
Escaped the chasing Nazis on the REICH level without being caught once.
Escaped from the Red Line.
Used 10 Lever Switches.
Stealthily killed 15 Enemies.
Killed 100 Human Enemies.
Freed the Prisoners.
Spent 30 minutes' worth of Filters.
Completed the ECHOES level undetected by the Watchmen.
Killed 100 Mutants.
Killed the Rhino.
Turned off 40 Lights without breaking them.
Found out about the Reds' plans.
Made Moskvin tell the truth with help from the Dark One.
Burned 50 Cobwebs.
Made 10 Spiders flip belly-up.
Saved the Bear from the Watchmen after the fight.
Found and returned the crying child's Teddy Bear.
Finished the ASHES level without taking a hit.
Rescued the Women and Children on the BANDITS level without raising alarm.
Completed the game in Survival Mode.
Completed the game in Spartan Mode.
Watched the entire Theater Show.
Killed the Watchmen attacking the Railcar without taking any damage.
Killed 10 enemies in a row with Throwing Knives.
Drank at every occasion.
Opened 10 locked safe boxes.
Saw all Visions in the Dead City.
Removed your mask when Lesnitsky demanded.
Disarmed 10 Traps.
Killed all armed enemies on the REVOLUTION level, including all reinforcements.
Completed the ANNA level.
Completed the HEAVY SQUAD level.
Completed the FACILITY level without killing or raising alarm.
Completed the PAVEL level.
Completed the KHAN level.
Completed the SNIPER TEAM level.
Completed the REVOLUTION level without killing and raising an alarm.
Completed the SPIDER LAIR level.
Completed the SEPARATION level without killing or raising alarm.
Completed the BRIDGE level without a kill.
Spent 1 hour on the DEVELOPER level.
Completed the KSHATRIYA level.
Completed all 43 of Artyom's hidden Diary pages.
Completed the TOWER level.