It's a semi-generic PC controller. The label on its back reads "Thunderstrike SL-6515-BK-V2". and an EAN code number: 4027301165159.
https://www.speedlink.com/en/THUNDERSTRIKE-Gamepad-for-PC-black/SL-6515-BK
When running the download version in Wine the controller worked fine (not sure if *all* buttons worked correctly, I couldn't really work out how that "swap ability" feature is supposed to work).
Thanks for the reply! I'll look into the controller, see if there is a workaround in the unity input system for that specific controller, there must be!
The abilities are a bit mega man-esque. You unlock a new ability after each boss you beat, and each one is used by the same button. Then there's an additional button to "scroll" through the abilities. It's a bit oldschool, but we thought it worked well with the bosses I designed and on top of that, it's scalable fairly well without ending up with many, many, buttons :D
