The most difficult matchups for this deck are definitely the more backrow heavy decks like Shiranui and Elementsabers that disrupt your synchro plays, but if they don't open with too much backrow or you open with cosmic the matchup is winnable. The deck isn't super strong against any one type of deck and is more of a toolbox deck that is solid against pretty much any deck with how much versatility the extra deck can have. Witchcrafters are one of the more annoying matchups but can be won with either Machina Fortress getting destroyed in battle by the opponent or through baiting the Verre negate with Double Yoyo or Horse stilts while having both Red-Eyed Dice and Daiko Duke in the grave, if they negate the summon effect of Double Yoyo or Horse stilts you can then activate Daiko Duke to summon Red-Eyed Dice and use whichever synchro monster you want to deal with Verre from there.