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