Here is the full list of all 9 peakvox Route Candle for Steam achievements.
Read the Help to the end.
The first time to finish under par.
The first time to finish a bogey.
It's first time to finish by a hole in one.
Finished all stages!
Finished all stages under par.
The first time to finish the special game.
Finished the special 1 to 10.
Finished the special 11.