Quick fix on the menu volume bar, which wasn't coloring itself properly, as well as a bug that may have caused problems with how levels unlock. Also added a small tutorial message for level 1 that vanishes after your first upgrade to help new players learn the controls.
1.0.1 Release Day Fixes + Tutorial
Build and release context
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.