Here is the full list of all 63 Curious Expedition achievements.
Finish a full game using no sanity item other than coca leaves.
Finish a full game without selling anything to the auction house.
Travel through 20 portals.
Succeed in 500 expeditions.
Finish a full game and recruit nobody at the harbor or villages.
How many abominations can you handle?
Collect 50 butterflies.
Recruit 20 natives.
Finish a full game without your standing ever dropping below 0.
Have at least 3 members of your trek be alcoholics.
Use your hot air balloon to escape an expedition.
Kill 20 giant spiders.
Find the unholy Blood Crown.
True lovers don't eat their loved ones.
Stay inside a portal world for 100 days.
Blow up 50 mountains
A chalice awaits beyond the face.
I just want to make sure the cat is fine.
Seeing London from above.
Kill 100 hyenas.
Kill 10 giant scorpions.
Blow up an active volcano with dynamite.
Obtain 100 treasure items.
Complete 50 harbor quests.
Find and dig up 10 treasures using treasure maps.
Headbutt a raptor.
Kill a giant crab.
Flee 10 times from combat.
Defeat a slave trader and free the slaves.
Kill 10 giant birds.
Finish a full game on 1st place.
Hunt down and kill the legendary hyena.
Survive the tutorial.
Finish a full game in 3rd place.
Finish a full game on 2nd place.
Reach world 2
Reach world 3
Reach world 4
Reach world 5
Reach world 6
Revive 10 trek members at altars.
Sell items worth 100000 funds.
Donate items worth 100000 fame.
Eat 500 chocolate rations.
Create 50 paintings.
Create 50 anthropological studies.
Unlock 13 explorers.
Finish a full game with a secret explorer.
Find an extraordinary friend.
Return what belongs to an altar.
Obtain a rare creature from the beast master.
There is something to find in every region.
Obtain 19 golden frames.
Obtain 19 platinum frames.
Find all items
Visit 5 different special regions.
Recruit 5 dinosaurs.
Kill 20 crocodiles.
Hatch 10 eggs.
Kill 10 giant walruses.