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