Here is the full list of all 15 Sign Motion achievements.
Better wear a helmet next time.
You have overcome every obstacle.
You are there when someone needs a little push.
Close, very close.
Melted your way through.
Divide and conquer.
Escaped a tough combination.
The taxi driver is not happy about the disruption.
Tiptoed over a hot surface.
Don't look now but you are being followed.
Floated through the street flawlessly.
The mind drifts away.
Got yourself some wheels.
Improvised an umbrella.
Seeing beyond the problem.