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