Thx for the reply, Hopefully they add SuperCPU support in a firmware update! Bought it anyways, game is hard as balls! And amazing, nice work!
Unfortunately TheC64 Mini probably isn't a powerful enough system to emulate a SuperCPU. The full-sized system might be. However, it is unlikely that there will be an official SCPU firmware upgrade or update as Retro Games Limited will probably not want to pay to licence it.