Demo v0.20.4 - small hotfix of bugs with default volume and souls tutorial

Demo v0.20.4

The story repeats and a new video revealed new bugs. These bugs got me in a middle of working on big update, so I hidden the feature I was working at and quickly fixed these issues. Muted sounds by default can really spoil the impression of the game even though there's a settings window for this.

Changelog

• Changed value of default volume from 0, so the game won't be muted by default anymore (the most important thing)

• Fixed sprites of a portal in souls tutorial panels that became broken after portal animations update

That video

As I wrote in the comment to that video I'm happy that most of the problems that was mentioned there COULD be compensated with the updated I'm working with because of things will be unlocked earlier.