Here is the full list of all 49 Metro: Last Light Redux achievements worth 1,000 gamerscore.
Destroyed D6.
Completed the game in Survival Mode.
Made Moskvin tell the truth with help from the Dark One.
Saved the Bear from the Watchmen after the fight.
Found out about the Reds' plans.
Freed the Prisoners.
Killed the Rhino.
Killed 100 Mutants.
Spent 30 minutes' worth of Filters.
Rescued the Women and Children on the BANDITS level without raising alarm.
Killed 10 enemies in a row with Throwing Knives.
Turned off 40 Lights without breaking them.
Killed 100 Human Enemies.
Made 10 Spiders flip belly-up.
Burned 50 Cobwebs.
Killed all armed enemies on the REVOLUTION level, including all reinforcements.
Used 10 Lever Switches.
Escaped from the Red Line.
Watched the entire Theater Show.
Stealthily killed 15 Enemies.
Escaped the chasing Nazis on the REICH level without being caught once.
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.
Disarm 10 Traps.
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.
Complete all 43 of Artyom's hidden Diary pages.
Complete the BRIDGE level without a kill.
Save D6.
Find and return the crying child's Teddy Bear.
Kill Pavel.
Remove your mask when Lesnitsky demands it.
Kill the Watchmen attacking the Railcar without taking any damage.
Complete the game in Spartan 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.