Use colors to denote difficulty: Bronze (Common), Silver (Rare), Gold (Epic), and Diamond (Legendary).
Secret achievements revealed only upon discovery. Example: "Night Owl" (Using the app after 2 AM). 3. The "Achievement Gallery" (UI/UX) Achievements
Display the percentage of the community that owns a badge (e.g., "Only 2% of users have this" ). This adds prestige. Use colors to denote difficulty: Bronze (Common), Silver
Grayed-out icons with a "Hint" or progress bar (e.g., "75/100") to create a "completionist" urge. "75/100") to create a "completionist" urge.