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