Here is the full list of all 18 Blue Wednesday achievements.
Fired by the Manager
Tried out for a piano session of Bird's
Write a song an album
Completed the game
Collect all the Vinyls throughout the Game
Win the Highest rank in all rhythm games
Play the piano in the square
Complete story of Neighbor from downstair
Watch Fernando's rap battle
Invite David to Bird's
Complete story of Oldman
Recommend a dating course to Alex
Fix the radio for Fernando
Help out Santiago to make coffee
Invite friends to Bird's
Complete all Side-Stories
Interact more than 3 times with Cats throughout the game
Interact more than 3 times with Dogs throughout the game