Orange cat controls: W and A to move guard up and down, F to attack, Q to block, W all the way up to charge an attack. F after charge to super attack. E after charge to throw sword. X to crouch. Blue cat controls: I and K to move guard up and down, 4 on numpad to attack, 7 on numpad to block, I all the way up to charge an attack. H after charge to super attack. U after charge to throw sword. M to crouch. The way the combat works is that if you are both on the same guard, you block each other's attack, if you stab them they die. Blocking blocks all attacks besides anti block (all the way down). if you use anti block against anything else you get stunned. The super attack will stun you if you don't block it. You need to duck under a sword throw to dodge it.
All music and code by me, sword sound effects are royalty-free.