Kane didn't need that many spears, but he decided to keep them just in case. He hid them outside the city while he kept three of them with him.
"Aside from my red skin, I dare say that I look pretty human… if I stay close to the shadows, the guards here won't notice me," Kane thought. "I guess I will keep going and see what happens."
Some people say that it is better to leave a place like a casino while they are winning, but Kane didn't feel like playing safe when the workers of the casino could chase after him afterwards to get his spoils.
In any case, Kane began to move around the city close to the darkness while he also extinguished the torches nearby. That would make people feel suspicious, but it was better than letting them see him clearly and dash at him like mad dogs.