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