It's in the BagG 50

It's in the Bag G50:
Unlock 50 Luggage of any type.

At the end of each game you get to open pieces of luggage. the more numbers you daub with the luggage icon the more you can open. you must have a key for each piece of luggage. you can earn keys by daubing numbers with key icons, or also from opening luggage. if you have more luggage to open and no more keys you can buy more with coins. after opening 50 pieces of luggage across all games this achievement will unlock.

ALSO, if you have already gotten this on the Windows 8 version, it will pop as soon as you start the Windows 10 version.

Credit goes to QuickMythril

Your cards will occasionally have a silhouette of a bag on one of the numbers. When one of these numbers is called and daubbed, you receive a piece of luggage. You also often receive luggage for completing and calling bingos. Accumulate enough keys to unlock the luggage, and once you've unlocked 50, the achievement is yours. Unlocking luggage is essential to progress through the game (unless you feel like spending several months, maybe even a year or more on this title), so this will come naturally.