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