Here is the full list of all 60 Curious Expedition 2 achievements.
Collect 50 butterflies
Kill a Giant Sandworm
Complete an island with an all-animal party (excluding leader)
Promote a character to max level
Ride a dinosaur
Raise a dinosaur from egg to adulthood
Promote a character 100 times
Unlock all explorer classes
Find buried treasure 10 times
Finish 20 three-skull expeditions
Finish the campaign on Lunatic difficulty
Kill 100 hyenas
Have a Pale Mask as a member of your trek
The Royal Avalon Society: Reach max club level
Rob 10 Shrines
Successfully complete 100 dice challenges
Discover 500 locations
Fail Director Mode
Complete a year of Director Mode
Finish the campaign without dying
Enter a Portal to a Corrupted world and return back
Complete a year without your Standing ever dropping below zero
Finish the campaign on Adventurer difficulty
Finish the campaign on Traveller difficulty
Kill 30 animal groups
Complete Act III
Complete 5 islands without killing anything in combat
Learn a tribe type 10 times
Complete Act II
Tame the mysterious Red Elk
Put on a hat
Meet a ghost
Participate in a Club Competition
Kill an enemy using the environment
Bring back 500 fame of items in one expedition
Complete Act I
Discover 15 locations
Complete an island without resting
Finish the first expedition in 1886
Complete 20 village quests
Earn 100000 total fame
Complete a standard expedition (non-story) without buying anything from the Ship Shop
Free the salamander prince
Complete an island with nothing equipped
The Taishi Academy: Reach max club level
Lux Labs: Reach max club level
Witness a cross-species love affair
Find buried treasure 50 times
Win all rounds of the drinking contest
Fully complete a Cartography map on a 4-region island
Play the entire campaign without killing anything in combat
Finish the campaign with at least 10000 total Fame
See all campaign endings
Fully complete 5 Anthropology checklists
Get a character with 6+ mental ailments
Allow an Abomination to eat a party member
Complete Director Mode
Complete 10 years of Director Mode
Have the Inspector return to your service
Return a Pale Mask trek member to normal