We've published a patch that fixed the following two bugs:

• Sound effects would sometimes stay faded out if the player left/restarted a level at just the right moment
• The Corporate Takeover achievement was being awarded prematurely

• At most, only one player can use keyboard/mouse controls. So at least one player will need to use a controller/gamepad.
• There is no need to buy a second copy of the game for your friend to play. Just start the game on one machine, Alt+Tab over to your Steam friends list, right click a friend, and select Remote Play Together to invite that friend to play with you even if they don't own the game.
• RPT is a relatively new Steam feature with occasional hiccups that are usually resolved simply by unplugging and plugging back in controllers or switching up who's hosting. The only stubbornissue we encounteredwhile testing was that gamepads wouldn'tregister on Linux unless that Linux machine was the host. PC/Mac did not experience any issues while hosting or being hosted by players on any of the 3 operatingsystems.

• Couch co-op
  
• 20 unlockable weapons, gear, and perks
  
• A dog
  
• Whimsy
  
• Kaiju
  
• A wood chipper
  
• Endless Mode
  
• Horror Synth
  
• The unique catharsis that comes from throat-punching a billionaire ghoul who would rather watch the world and everyone on it burn than lose a tax break

• OS: Ubuntu 16.04 (64 bit)
• Processor: Intel Core i3 530 or betterMemory: 4 GB RAM
• Memory: 4 GB RAM
• Graphics: OpenGL 3.3 compatible card
• Storage: 2 GB available space