Battle ratings, XP and badges
Ranked battles move your rating. Everyone starts at 1000. Beating a higher rated trader earns more than beating a lower rated one, and your first 10 battles move faster so new players find their level quickly. In a team battle every member gets the team's result.
Tiers: Bronze, Silver from 1100, Gold from 1250, Platinum from 1400, Diamond from 1550.
A battle only counts once at least two traders place a trade, and only for the players who traded. The same two traders can move each other's rating 3 times a day. This keeps second accounts from farming points.
Seasons run for one calendar month (UTC). The leaderboard shows traders with at least 3 ranked battles in the season. When a season ends, the top 10 earn season badges and every rating eases halfway back to 1000. You can show yourself as a private trader on the leaderboard. Players in your battles still see your username.
XP comes from every counted battle, ranked or not: 20 for playing, 5 for each trader you beat, 30 for a win (25 for each member of the winning team) and 10 for staying inside the max loss. Leaving early earns nothing. You can earn up to 400 XP a day. Levels need more XP as you climb.
Badges reward wins, streaks, discipline (finishing 10 battles without hitting the max loss), team wins, tiers and season places. See them all under Battles > Badges.