Edo battle gold is really annoying, but not too difficult if you follow the advice I gave above. While you are resting no one attacks you. Three breaks is really all you can get in, though, given how slow your health regenerates. don't even think about resting until your kills reach about 400-450, though. When I did it, I had about 1/10 health left before the first rest period and about the same the second because I got hit by a Chiba. I suggest going against the last Chiba at near full strength because unless you can interrupt her combo, she hits for a ton of damage.