Here is the full list of all 10 SHOWMAKER achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Finished recording for the first time On Air.
Setup your first stage.
Placed an camera on the track.
Placed an effect on the track.
Placed a top light on the track.
Placed a back light on the track.
Played a song for the first time On Air.