[quote][b]Posted by:[/b] Regggie Noble a week ago, i was a 39 in team slayer over the past week, it went as low as 33 because i lost a level, then lost more when i boneheadedly tried to earn them back myself instead of waiting for my team however, ive won many games with my team and im back to a 39, but i can never seem to level to 40, despite losing one game then going on a streak of 9 straight wins, which actually saw me go from 38 to 39 why cant i level up, is it because im playing in a mixed party(a friend suggested this) or is it that i lost so much before that the system wont level me up until i win something like 20 straight?[/quote]Yes, it is. Playing in a mixed party will either make leveling up very slow or prevent it completely. Here is a quick [url=http://www.bungie.net/Forums/posts.aspx?postID=17934686] TriuSkill FAQ[/url] I created to answer some of the most common questions.