Sengoku Basara 4 Sumeragi New Stage guide: Ieyasyu/Hideyoshi's Stage

First bonus is capturing all thebases at once. Second is to defeat tadakatsu. To do that you need to deplete the gauge in the top right by taking bases and killing mooks as fast as you can. If you succeed a canon will blow the gate open alowing you to fight hideyoshi instead of mitsunari. Kill hideyoshi first and tadakatsu will show up.