Gamepedia was upgraded to MediaWiki version 1.31 on Wednesday November 14th. To learn more about the upgrade and its effects click here.
An achievement point is a unit that accumulates based on different types of achievements. There are currently no plans to allow spending them on anything. It is helpful to think of the points like the score at the end of a game - no one asks what the players will spend their points on after the game, it's just a measure used to determine who won.