Here is the full list of all 10 The Game of Sisyphus achievements.
Achieving maximum speed.
Out of bounds three times
Achieving something before even starting the game, this must be a special beginning.
Congratulations on taking the first step. You will be celebrated like this four more times.
There's more to go! You're doing well, but it's not even half yet.
60% achieved! Now you're starting to taste the true essence of the game.
The end is beginning to appear, but don't get cocky. The final stretch is always full of surprises. Are you ready?
Congratulations! You are now a legend of this game.
Flipping the Bird
Getting beaten by a golem.