Ah ha!
Apparently it was right in front of me this whole time, just had to scroll all the way down on their home page, past all the screen shots.
Now to map the keyboard to my controller.
Although I'm not sure about the "double tap directional key to dash forward + down to roll" thing stated. Hopefully if I just map the keys to controller, it'll work by hitting the directional key twice really fast, etc.
At least the arrow keys makes more sense now. I knew they were all doing an attack (looked all the same), but now I see it's light and heavy.
It also says "Heavy Attack Button ceases to function randomly when using controllers" which implies that certain controllers would work, but key mapping would take care of that bug instead.
That's sounds familiar. I know I have a very good program like that somewhere that was really easy to setup and use. I had to use it for Duck Tales Remastered on Steam since for reason that game only used a very specific controller, everything else needed a controller mapping program. That was either the one I used or one I tried, don't remember offhand, but I'll find out soon enough when I mess around with it now that I got the list of keys.