Portal Dungeon - Demo Update v1.0.3

Hello everyone, the closing date of this demo version is approaching. In this update,
We will temporarily open the characters that originally needed to be unlocked for everyone to use, I hope everyone has a good time!

• Fixed the problem that props would fall to places that cannot be picked up.
  
• Fixed the overlapping problem caused by music adjustment.
  
• Fix some background display problems.
  
• Fixed the problem that some monsters will attack their own side after they become our side.
  
• Adjusted the increase in monster level when advancing in the third stage.
  
• Adjusted monster health growth in multiplayer.