Reviewers Liked

  • Awesome four player action
  • Cool new weapons
  • New zombies are great
  • Great play modes
  • Solid Mac performance
  • Improves on L4D in almost every aspect
  • Three new Special Infected and Uncommon Infected are a welcome addition

Reviewers Didn't Like

  • Much more difficult
  • Seemingly constant flow of enemies
  • Less pacing control means less tension
  • Bots have not really improved, they still cannot pick up explosives and have slow reaction times
  • Some levels can be lengthy and frustrating if your team wipes
  • PC version had/has a glitch that eats your Steam Achievements
  • Slightly higher difficulty causes some frustration in the beginning
  • AI teammates can be frustrating