Here is the full list of all 15 Music Store Simulator Prologue achievements.
Buy your first Skill Course
Complete the Tutorial
Accept all the new Orders
Build the first Guitar without the Tutorial
Complete all the Customers' Orders
Take a Rest on the Sofa
Build all the Guitars without resting
Paint an instrument at 100%
Glue the area at 100%
Complete a Guitar with a Quality level higher than the Customer's Order
Complete a Guitar with a Quality higher than 3.0
Purchase and position a new Workbench in your Studio
Play a chord with a built Guitar
Start an Advertising Campaign
Customize the slots of a Warehouse shelf