Here is the full list of all 49 How to Survive 2 achievements.
Drink 50 potions.
Have all "Stamina" skills at the maximum level.
Join a public camp for the first time.
Kill 50 infected during a last stand.
Prepare every type of potion.
Finish every quest.
Reach the maximum level with your character.
Have the camp at maximum level.
Successfully complete all of the elite quests.
Kill 10 infected animals of each species.
Meet every character in the game.
Hit a car under alarm with a trash can.
Kill 100 infected with traps.
Finish Kovac's first challenge while keeping the pylon intact.
Kill 100 infected with silver bullets.
Kill 50 nocturnal infected.
Wear the Jester's hat for the first time.
Kill 5,000 enemies (of all types).
Kill 100 infected with flint-tipped fletched ammunition.
Upgrade 10 weapons with modules.
Kill at least 2 infected with one arrow or crossbow bolt.
Upgrade a weapon with modules for the first time.
Prepare a first potion.
Pick at least one of every type of plant.
Pick 20 locks.
Kill 1,000 infected humans.
Kill 500 infected with a critical shot.
Kill 10 infected with a Bomber explosion.
Pick a lock for the first time.
Equip a pet for the first time.
Kill 2 or more enemies at the same time with a melee weapon.
Kill an infected with a charged attack for the first time.
Give an ally an item for the first time.
Customize your survivor for the first time.
Enter Kovac's bunker for the first time.
Finish your first co-operative quest (local or online).
Successfully complete half of Kovac's challenges while keeping the pylon intact.
Successfully complete all of Kovac's challenges while keeping the pylon intact.
Have all "Survival" skills at the maximum level.
Have all "Weapon" skills at the maximum level.
Have all "Special abilities" skills at the maximum level.
Have all "In Danger" skills at maximum level.
Cook every type of recipe.
Make every type of armor.
Make every type of weapon.
Finish 15 co-operative quests (local or online).
Finish Kovac's first challenge in co-operative mode (local or online).
Help an ally in trouble 30 times.
Finish each of the game's festive quests.