zxcvbob
Emperor
It's doable for Onandaga (I tried it in a replay) and maybe Beijing. Q-boats and catapults could probably take Kyoto. But I was racing towards Compass pretty fast so by the time I built a swarm of quinqueremes, it was time to build galleasses. Maybe take Onondaga first and get a couple of promotions on your fleet. Buy your first galleass and it can join them at Kyoto (or better yet, whatever trashy cities Oda builds on the way to Kyoto) while you build more.I wonder if a quinqui-only rush is doable. It would be tough since you can attack most capitals only from 2 hexes before the city heals and fires back. And with Palenque it would probably be impossible since you would only be able to attack once per turn, meanwhile the AI will build walls and archers.
If I can spare some time I will give it a try one of these days!