Major update: Multiplayer and Optimization

Major update:

• Significantly improved optimization, the game now runs much more smoothly even on weak hardware
  
• Improved rope physics and optimized it
  
• Fixed some bugs with player respawn
  
• Fixed some problems with story missions
  
• Added a new location for multiplayer - construction site;
  
• Added inventory to multiplayer;
  
• Now you can pick up and throw objects in multiplayer
  
• We are preparing a major update for multiplayer