The 1000DaysWasted: Drum & Bass Pack Add-on for Aaero has 9 achievements worth 75 gamerscore.
Complete 'Dissonance Constant' on Master
Complete 'Rage' on Master
Complete 'The Sickness' on Master
Complete 'Dissonance Constant' on Advanced
Complete 'Rage' on Advanced
Complete 'The Sickness' on Advanced
Complete 'Dissonance Constant' on Normal
Complete 'Rage' on Normal
Complete 'The Sickness' on Normal