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