@lonestarr@Witch_Hunter_Siegfried@supersid333 Continuing this discussion - the Army of Darkness TRPG does have some notes on running games in a fantasy medieval setting (read: d&d-type fantasy) but you could also incorporate material from Dungeons and Zombies, a sourcebook for Unisystem's "All Flesh Must Be Eaten". Slam in the magic rules from the Nasuverse game and you've got a tabletop fantasy game that Hasbro can't corrupt, though you will need to mix and match rules to get exactly what you want. Also: https://patchlord.com/patchworld/unisystem/unidnd3e.html
@lonestarr@Witch_Hunter_Siegfried@supersid333 This is a little off-topic but the "Army of Darkness" rpg also runs on Cinematic Unisytem. It has rules for running AoD and/or the Evil Dead as a cinematic game. It also had packages for making Tool Men, which are people who have grafted tools or weapons onto their own bodies.
The main reason I didn't include content from that one is I think it is too thematically and tonally dissimilar to the core Nasuverse. I'm trying to avoid going too fanfic-ey, if you understand what I mean. Still, some of Ash's Big Chin abilities to heal troops and inspire them might be appropriate for Iskandar (Rider) to have and use. In any case, if you want your player characters to fight Deadites, Army of Darkness is the book to get.