According to the developers, Marvel's Spider-Man 2 will not include a cooperative mode

Insomniac Games has debunked the rumors of introducing a cooperative mode in Marvel's Spider-Man 2. In an official tweet, the developers stated that the game will be focused on single-player gameplay.

The rumors about the possible addition of a cooperative mode emerged in August 2022 and were based on mentions of multiplayer-related elements discovered by data miners in the PC version of the first installment of the game.