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