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