You have to play a game on 30 tables in the Windows 10 version. You do not have to set a certain score, just play a game normally or let the ball drain out of the table 3 times. You might be able to start a game and quit, but I do not know for sure. I believe content from the Xbox One version also transfers to Windows 10.
Each table on Windows 10 costs about $2.49/$2.99 USD. This means that to unlock this achievement, you will have to spend close to $80 USD. There is one table that can be played for free, but the rest have to be purchased.
This achievement must be unlocked on Windows 10 and cannot be unlocked on the Xbox One version, despite the shared achievement list. If you played 30 tables on the Xbox One, it should unlock after playing a single game on Windows 10.
Playing your first 6 tables will unlock
The Pinball Explorer achievement in Pinball FX2 worth 76 pointsExplore your collection! Play at least 6 different Pinball FX2 tables for Windows 10.