Resident Evil 0 HD REMASTER
Resident Evil 0 HD REMASTER CO-OP AND MULTIPLAYER INFORMATION
Resident Evil 0 HD REMASTER - Game Trailer
Does Resident Evil 0 HD REMASTER have Co-op or Multiplayer?
Resident Evil 0 HD REMASTER is a single-player game.
Resident Evil 0 HD REMASTER is singleplayer only. ([Source]
Are there any plans to add multiplayer or co-op mode?
There are currently no plans to add multiplayer features to the game.