Here is the full list of all 10 Shy Cats Hidden Tracks - Paris achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
You found your first cat
You found your first money bag
You hired your first Musician
You found your first fan
You already found half of the kitty singers choir.
You already found half of the lost money bags.
You found the whole kitty singers choir.
You found all the lost money bags.
Search for Roofcats Band on Steam!
You reached 999 coins!