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