Small update: bugfix and monster sounds

[p]CHANGELOG[/p][p]---------[/p][p]Version 1.4.7[/p][p]--------------[/p][p]MOST IMPORTANT:[/p][p]- Now each monster type has a different sound when they die.[/p][p]- Improved the intro chapter because there were some inconsistencies, and to add some insight.[/p][p]OTHER:[/p][p]- Fixed some minor bugs.[/p][p]- Added a check for relationship status to trigger future chapters.[/p]