To earn achievements that depend on tracked play time, you must register for play-time sync: log in to this site and open the dashboard at least once while signed in, or use XBL Beacon. Browsing the site without doing that does not record play time toward those achievements in the future.
Highest total gamerscore on XB.Live. Click a name to open their profile.
Gamerscore is the sum of points from every achievement you’ve unlocked here. Each achievement has a point value; when you meet its rule, we add it to your score once.
Unlocks are evaluated when you browse the site, when play time is recorded, and when our background jobs run—so new achievements can appear shortly after you qualify, not always instantly.
Some achievements care how many distinct games you’ve played. We prefer your tracked minutes per title. If we don’t have per-game time, we count a game when your linked gamertag appears on at least one leaderboard for that title.