The arm doesn't feel pain like that. Just bashing things with it doesn't hurt.

[Nice of him to ask, though. There are other ways to make the arm hurt, but they all require getting deep inside it and fucking around with the nerve connections. They keep hammering. It's actually pretty effective, and gives them better control over the angle of their strikes.]

After this long, I don't think we could track Riku. There have been too many other tracks. We can look if you want, though.