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