This Seeking Tech guide will explain how you can beat the first Crumble Rumble level in Astro Bot.
Use the following video as a reference:
The floor will break apart when you hover with your laser legs. So you make sure you land on a safe area.
You only have to deal with three electric enemies. Jump and hover above one of them to defeat it quickly before moving on to the next enemy.
Here is the same run again at normal speed.