It's been a while since Tei beat my record with much more excellent execution, so I had to come up with something a little different to speed up the destruction of the castle. Moving the mounted units in first seemed to do the trick, though it does require much better timing.

I did mess up the western conquistador a little bit, but it worked out either way, luckily.

I do think below nine minutes is definitely possible, but it's going to require an almost perfect run with almost no distractions and perfect positioning under the castle.