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