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