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