Game Experience Improvement

• Re-arranged and added music, BGM, and sound effects.
• Re-arranged the voice-over for better story telling
• Added coins system
• Improved some trap mechanism
• Refined the experience of ending
• Added more minor details in the map for exploration
• Fixed bug:
  • lighting in the intro
  • voice and subtitle overlapping
  • jump outside the map
  • jump does not work sometimes

I am working on the STEAM page stuff. If everything is right, the demo will be placed on STEAM at the end of this month.