Ok, the first 10 or so cats would go down before any real injury has occured. Sooner or later an attack by the cats would be able to injure the lower leg enough that one or maybe even both achilles tendons are damaged. That sets up at about 30 cats so far. Using a cat as a spinning club would take out a decent amount of cats, but it would be necesary to get a replacement cat due to tail snapage. Once that occurs, the loss of blood so far and the lack of weapon would allow the cats to start attacking places higher on the body. Rolling then would be used to try to kill cats that way, but you would end up hitting the pile of dead cats and be unable to roll further, sealing the loss, when the cats are then free to rip you apart. Total cats needed, 84.