Full list of all 51 Atomic Heart achievements.
The base game contains 42 achievements, and there is 1 DLC pack containing 9 achievements.
Create a weapon in a crafting machine
Collect 100 jelly
Fly out of Chelomey
Use a phone booth at Chelomey
Unlock all achievements
Kill Hedgie without making a single shot / destroy all statues
Kill Belyash
Kill Hedgie
Kill Plyusch
Kill Natasha
Kill Dewdrop
Kill Twins
Kill Belyash with a melee weapon
Get out of Vavilov
Take a train at the Lesnaya Maglev train station
Clear the VDNH complex
Finish a theater performance
Get to a hospital
Explore Pavlov
Find out the AoC's secret
Complete the game on Armageddon
Create five types of weapons
Collect all weapons
Craft consumables of all types
Pick all apples in Limbo
Upgrade a weapon to the maximum level
Fully upgrade one skill tree
Find all talking dead animals
Talk to every dead
Find all Chirpers
Find all Lootyagins
Find a testing ground
Complete all testing grounds
Scan all mobs
Kill 10 burning enemies, 10 electrified enemies, and 10 frozen enemies
Get 25 kills with headshots using the PM
Freeze a Vova mid-air
Don't let a sprout grow into a mutant
Use Telekinesis to throw an object and knock down an Owl
Get drunk with vodka and kill 5 enemies
Kill 3 or more enemies with a single Railgun shot
Hit 20 enemies by a car
Get into the ORB lab
Use a Strekoza for the first time
Send all BEA-Ds to NORA's brain
Complete the Annihilation Instinct DLC
Separate several combined BEA-Ds with one shot from the Secateur
Kill 3 enemies while using technostasis
Kill 3 M4D-5 robots in a row while they're hopping on one foot
Destroy 15 enemies using the Alionka neuropolymeric launch module
Upgrade the Klusha and Secateur to max