Your Slayer Rank is based purely on player level. Climb from Fresh Spawn (Lv. 1) all the way to Backlog Legend (Lv. 80+) by earning XP through completing games.
Player level — increases as you earn XP by completing games. Pro users earn XP on every completion.
Games you've marked as completed. Each completion earns you XP and counts toward your rank and streak.
Games in this player's library that are not completed yet. This is their current backlog to burn down.
Consecutive days with at least one game marked as completed. Keep playing daily to grow your streak and unlock XP multipliers (Pro).
Sum of Steam store prices for games that were both played and marked as completed.
Your completion ROI: the % of your library's dollar value that has been both played and completed.