Kill 10 burning enemies, 10 electrified enemies, and 10 frozen enemies
Freeze a Vova mid-air
Complete the game on Armageddon
Kill Twins
Find out the AoC's secret
Kill Dewdrop
Explore Pavlov
Get to a hospital
Collect all weapons
Finish a theater performance
Kill Natasha
Upgrade a weapon to the maximum level
Find all Chirpers
Kill Belyash
Kill Belyash with a melee weapon
Complete all testing grounds
Find all Lootyagins
Find a testing ground
Hit 20 enemies by a car
Kill 3 or more enemies with a single Railgun shot
Fully upgrade one skill tree
Find all talking dead animals
Clear the VDNH complex
Pick all apples in Limbo
Get drunk with vodka and kill 5 enemies
Kill Plyusch
Scan all mobs
Get 25 kills with headshots using the PM
Craft consumables of all types
Use Telekinesis to throw an object and knock down an Owl
Create five types of weapons
Kill Hedgie without making a single shot / destroy all statues
Kill Hedgie
Take a train at the Lesnaya Maglev train station
Get out of Vavilov
Don't let a sprout grow into a mutant
Create a weapon in a crafting machine
Collect 100 jelly
Fly out of Chelomey
Use a phone booth at Chelomey
Unlock all achievements
Talk to every dead
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