Here is the full list of all 45 Catch a Falling Star achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Catch/use 50 "increase basket speed" power-ups
Unlock the Under-the-sea theme
Unlock the Japan theme
Purchase all the new basket designs
Purchase 10 new basket designs
Save 2500 StarCoins
Score your first 4000 points
Catch 10 "lose a life" penalties
Deposit your 1000th star
Score your first 3000 points
Spend 1000 StarCoins
Spend 500 StarCoins
Purchase an in-game power-up with Starcoins
Score your first 1000 points
Score your first 2000 points
Catch/use 10 "increase basket speed" power-ups
Deposit a basket with at least 3 ice
Buy all the increases in space for your basket
Bump 5 ice with the side of your basket, giving you two StarCoins - don't spend it all in one place ok!
Score your first 500 points
Catch 100 StarCoins
Bump 10 objects with your basket
Deposit your 100th star
Catch/use a "less ice" power-up
Purchase a new basket design
Make your first purchase with StarCoins
Buy an increase in space for your basket
Catch/use an "increase basket speed" power-up
Catch a StarCoin
Catch 10 StarCoins
Score your first 100 poitns
Catch/use a "no wind" power-up
Catch a "lose a life" penalty
Bump ice with the side of your basket
Deposit your 10th star
Bump a star off the side of the screen, saving your life
Bump a star with the side of your basket
Deposit a basket full of stars
Use an in-game power-up
Deposit your first star
Deposit a basket that hasn't been completely filled with stars
Start the game and behold how awesome the menu is!
Catch/use 100 "increase basket speed" power-ups
Score your first 4500 points
Score your first 5000 points. NICE!!