New update brings volume setting under pause. The volume setting will remain in all scenes except when going back to the Main Menu.

SFX are unaffected at the moment. Will create another slider for SFXs (which is really though considering the amount of sound it has).

Also fixed Level 1 and Level 2 not working the Restart Level in pause and finally the change difficulty with mouse or keyboard which was a bit clunky. Now it is consistent :)

Let me know if you find bugs. As you can see, I'm providing support.