This Seeking Tech guide will explain how you can beat the Rolling Star Sola level in Astro Bot. Use the following video as a reference:
To start the stage, punch the armadillo and then jump on him.
Controlling the armadillo can be a little bit slippery, so make sure you move carefully through the level. You should also avoid the bumper enemies as these will knock you around.
When jumping, you should avoid hovering and double jumping as these actions will detach you from the armadillo.
You can also kick the armadillo to attack enemies. When doing so, make sure you are on safe ground since you will no longer be standing on the armadillo.
When you get to the narrow passage, try to line yourself up so that you can roll straight through and jump near the end.
For the last section, move slowly and then push forward when you see an opening to roll past through the bumpers.