You need to open the steam developer console, which can be opened by typing
steam://open/console

which connects to the steam client and opens the developer console after which paste the following commands one by one, and move the contents of the downloaded folders into a single folder, recreating the game directory.

download_depot 42682 42682 6067691797475126381 (shared content)

download_depot 42682 42683 6381783964590594065 (Localization)

download_depot 42751 42751 9089183337461621316 (server binary)

after that assign the custom folder you made to plutonium and they game will start.

Fuck you activision. Can't stop the signal.