The Monstercat Pack Add-on for Aaero has 13 achievements.
Earn 105 stars on Normal
Earn 105 stars on Advanced
Earn 105 stars on Master
Complete 'Outsiders' on Normal
Complete 'Outsiders' on Advanced
Complete 'Outsiders' on Master
Complete 'We Won't be Alone' on Normal
Complete 'We Won't be Alone' on Advanced
Complete 'We Won't be Alone' on Master
Complete 'Echoes of the Past' on Normal
Complete 'Echoes of the Past' on Advanced
Complete 'Echoes of the Past' on Master
Find an extra 30 secrets