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