Here is the full list of all 15 StepByStep Playtest achievements.
Curious explorers!
There seems to be some verve
I have touched some mysteries, and maybe I have some direction
The pen is charming
Love, or love!
Superb skill and level!
Soul and life appear in the work!
Miracles and miracles!
No limits, no frames, a heavenly work
This is self and selflessness!
The right to speak!
Hello, game
It all began
This is lightning!
I came, I stayed, I left