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