If you receive a "Checksum Error" during extraction, it often means part03.rar is corrupted. You should check the source for an "SFV" file or "MD5" hash to verify the file's integrity.
If this archive is complete and verified, it contains the base game plus all premium content: Marvels.Midnight.Suns.Legendary Edition.part03.rar
Customization options for the team, including the Legendary Premium Pack . If you receive a "Checksum Error" during extraction,