Here is the full list of all 49 Metro: Last Light Redux achievements worth 1,000 gamerscore.
Destroyed D6.
Completed the game in Spartan Mode.
Made Moskvin tell the truth with help from the Dark One.
Found out about the Reds' plans.
Killed the Rhino.
Turned off 40 Lights without breaking them.
Spent 30 minutes' worth of Filters.
Found and returned the crying child's Teddy Bear.
Killed 100 Mutants.
Made 10 Spiders flip belly-up.
Killed 100 Human Enemies.
Stealthily killed 15 Enemies.
Escaped from the Red Line.
Burned 50 Cobwebs.
Used 10 Lever Switches.
Escaped the chasing Nazis on the REICH level without being caught once.
Freed the Prisoners.
Completed training sequence.
Chosen three primary weapons that use different ammo.
Finish the ASHES level without taking a hit.
See all Visions in the Dead City.
Rescue the Women and Children on the BANDITS level without raising alarm.
Kill all armed enemies on the REVOLUTION level, including all reinforcements.
Disarm 10 Traps.
Save the Bear from the Watchmen after the fight.
Complete the SEPARATION level without killing or raising alarm.
Complete the FACILITY level without killing or raising alarm.
Complete the REVOLUTION level without killing and raising an alarm.
Drink at every occasion.
Complete the ECHOES level undetected by the Watchmen.
Kill 10 enemies in a row with Throwing Knives.
Watch the entire Theater Show.
Complete all 43 of Artyom's hidden Diary pages.
Complete the BRIDGE level without a kill.
Save D6.
Kill Pavel.
Remove your mask when Lesnitsky demands it.
Kill the Watchmen attacking the Railcar without taking any damage.
Complete the game in Survival Mode.
Open 10 locked safe boxes.
Complete the SNIPER TEAM level.
Complete the KSHATRIYA level.
Complete the HEAVY SQUAD level.
Complete the TOWER level.
Complete the SPIDER LAIR level.
Spend 1 hour on the DEVELOPER level.
Complete the PAVEL level.
Complete the KHAN level.
Complete the ANNA level.