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