Here is the full list of all 18 Everdell achievements.
Pair a husband and wife.
Complete every hard Challenge.
Win 25 online games.
Send a worker to an open destination owned by another player 3 or more times in a single game
Compete every normal Challenge.
Score 3 victory points in a single game with Shepard.
End a game with two workers in your Monastery.
Claim 4 or more Events in a single game.
Journey three times in a single game.
End a game with 2 Critters in your Dungeon.
Score 5 bonus points in one game with Ever Tree.
Score 75 victory points in a single game.
Complete the Tutorial.
Have 5 or more occupied constructions in a single game.
Win an online game.
Score 50 victory points in a single game.
Take 5 or more turns in a row.
End a game 15+ cards in your city.