Here is the full list of all 63 Curious Expedition achievements.
Blow up 50 mountains
Travel through 20 portals.
Kill 100 hyenas.
True lovers don't eat their loved ones.
Recruit 5 dinosaurs.
Stay inside a portal world for 100 days.
Kill 10 giant birds.
Obtain a rare creature from the beast master.
Obtain 100 treasure items.
Find and dig up 10 treasures using treasure maps.
Kill 10 giant scorpions.
Finish a full game with a secret explorer.
Finish a full game in 3rd place.
Finish a full game on 2nd place.
Finish a full game on 1st place.
Headbutt a raptor.
Defeat a slave trader and free the slaves.
Reach world 6
Reach world 5
Blow up an active volcano with dynamite.
Kill a giant crab.
Kill 20 giant spiders.
Hunt down and kill the legendary hyena.
Reach world 4
Reach world 3
Reach world 2
Revive 10 trek members at altars.
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.
I just want to make sure the cat is fine.
Find an extraordinary friend.
Return what belongs to an altar.
A chalice awaits beyond the face.
There is something to find in every region.
Seeing London from above.
Finish a full game without your standing ever dropping below 0.
Have at least 3 members of your trek be alcoholics.
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.
Use your hot air balloon to escape an expedition.
Survive the tutorial.
Finish a full game and recruit nobody at the harbor or villages.
Obtain 19 golden frames.
Obtain 19 platinum frames.
Find all items
Succeed in 500 expeditions.
Recruit 20 natives.
Visit 5 different special regions.
Complete 50 harbor quests.
Flee 10 times from combat.
Kill 20 crocodiles.
Hatch 10 eggs.
Kill 10 giant walruses.