Here is the full list of all 9 Gravity Error achievements.
Finish a level without necessarily using all gravity shifters.
Collect all Orbs in Chapter 1.
Collect all Orbs in Chapter 2.
Collect all Orbs in Chapter 3.
Collect all Orbs in Chapter 4.
Collect all Orbs in Chapter 5.
Create a gravitational loop.
Collect all Orbs in the game.
Die 25 times in one level.