I'm not a Kamen Rider fan. It's not that I don't like it, I just don't give a shit about it. My only exposure to it is listening to Zeromaster and Wizwar ramble on endlessly about it in Skype chats regardless of what the original topic of conversation was.
That and Masked Rider.
The controls are about as simple as you'll get in a fighter short of Evil Zone. There's a button for light attacks and a button for strong attacks. That's it. Mash either of them while holding a direction to do a 2-4 hit combo that knocks down your opponent until you win.
Okay, it is a little more complex than that.
Some of the combos for certain characters are faster or slower, and some incorporate uppercuts to knock a Rider in the air and juggle them or leg sweeps to keep them on the ground more than they already would be. There's also a button specifically for cancelling combos and- yeah, you can tell where this is going.
Combo cancels, however, take down the Advent Gauge. I don't remember if that's what it's called, but it's linked to attacks called advents or vents so we'll roll with that. It's a gauge that fills at the bottom of the screen and can trigger things like combo cancels, advent attacks (where the animal/robot/thing representing each Rider attacks the opponent), advent guards (see advent attack, except it just pushes back the opponent), and the obligatory flashy finishing moves called Final Vents, all of which deal about the same 1/4 life bar damage, are done by having the Final Vent card selected, initiating the vent by shaking the Wiimote (not as annoying or counter-intuitive as it sounds) and hoping you're not only within grabbing distance, but won't be interrupted or dodged.
Komatta naa! Eego wa tsukai-dekimasen!