Here is the full list of all 49 Metro 2033 Redux achievements. It takes around 25-30 hours to unlock all of the achievements on Windows.
Find all Ranger stashes in Dead City.
On the level DEPOT silently kill the first guard and break into the Fascist station unnoticed.
Complete all 51 of Artyom's hidden Diary pages.
Complete FRONTLINE level without killing anyone.
On the level HUNTER kill the nosalises before they break through the ventilation grilles.
Kill 30 enemies with flame grenades.
Complete the game in Survival Mode.
Kill 10 Spiders.
Knock 30 human enemies out in close combat.
Kill 100 enemies using revolvers.
Get 30 kills with Hellbreath.
Kill 5 amoebas.
Open 15 locked safe boxes.
On the level FRONTLINE kill all of the enemy Red Army and Fascist Soldiers.
Kill 30 enemies with throwing knives.
Kill 30 human enemies in close combat.
Stealthily kill 15 Enemies.
Complete the level BLACK STATION without killing or knocking out any enemies.
Explode 30 enemies.
On the level OUTPOST reach the radio tower and broadcast the commander's message.
Kill 15 human enemies with Headshots from at least 30 meters' distance.
Make 30 deals in weapon shops.
Kill 100 enemies with assault rifles.
Kill at least one enemy with each weapon available in the game
Drink at every occasion.
Exchange 500 Military-Grade 5.45 rounds at Exchange kiosks.
Become a true ranger.
Find the truth.
Complete the game in Spartan Mode.
Kill 50 Watchmen.
Kill 30 enemies with a flamethrower.
Kill 200 Mutants.
Kill 100 nosalises.
Kill a librarian.
Spend 60 seconds in a Radiation Hotspot.
Use a Medkit 75 times.
Kill 50 humans with pneumatic weapons.
Save 1000 military-grade rounds.
Kill 20 lurkers.
Kill 100 enemies with shotguns.
Kill 30 human enemies with headshots.
Kill 100 Human Enemies.
Disarm 15 wire traps.
Save a group of Reds from Fascist captivity.
Kill 10 Enemies in a row without taking any damage.
Blow up the tunnel and airlock at CURSED STATION.
Kill 2 demons.
Wipe your Gas Mask 20 times.
Help the poor, a coin for the kid, medicine for the sick. You help everyone you see.