MrChiaroscuro's Summary stats for all time
Completion Percentage - 40.87%
has won 8,005 Achievements out of a possible 19,586 (40.87% Completion - 11,581 remaining)
has a Gamerscore of 172,422 out of a possible 464,920 (37.09% Completion - 292,498 remaining)
has a TrueAchievement score of 250,299 out of a possible 1,105,202 (22.65% Completion - 854,903 remaining)
If all achievements were worth 10 Gamerscore, the Standardized Score would be 113,612 points.
These stats exclude DLC packs without any achievements won.