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