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