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