Day Two Fix: co-op, colliders, dead targets

We dealt with a number of issues:

• Fixed environment colliders on Amusement Park level
  
• Fixed item interaction with dead bodies
  
• Fixed dead bodies counting as targets on Bar level
  
• Added Easy difficulty to the Local co-op mode
  
• Tweaked cheat codes ːpartymaskːːPartyEyeːːpartyknifeː
  

Please, do not hesitate to inform us if you run into any kinds of issues. Thank you and have fun!