In a final mission having almost nothing at all to do with the campaign and seemingly just stuck in here for giggles, Crazy Horse takes on Colonel Custard. It has nothing to do with the expansion other than the fact that it gives the name of the expansion.
Every enemy military building on the map will provide a small army to Colonel Custard when he arrives. None of these will be aggressive against you in the mean time and none of them will attack you.
To open Clayton Black has to rally the war chiefs to meet with Crazy Horse. Each chief will provide a type of unit and some unit producing structures.
The order of getting to the chiefs should be the north west chief first, then the one south of it, then the one far to the east. The goal is complete when all of the war chiefs are side by side.
A minor note every single time you hear a Bungle horn it means a small advance party or a “Custard charge” is headed toward your base. They are very small and easy to deal with.
Continue to play as per normal macroing up. You will not get access to many cannons in this mission so whatever shipments you can get with them will work out in your favor.
You should get as many mantlets as possible, and fill in the rest with infantry.
You should be actively moving around the map destroying unit producing structures. This will make the final battle easy. The enemy will have relatively small forces defending these places.
The thing is you have to be fast, on the move. As you produce units keybind them up and move them in to help.
Take the entire west side of the map first, this is where most buildings are. After it is clear take out the eastern side of the map.
When Colonel Custard arrives there should be no units to support him. His army will still be moderately large but you should have enough forces to deal with this. It is best to engage him before he reaches your village so that you can create another army quickly if this one won’t cut it.
The game sort of just ends on this note, the end of the story of the Black family. Sadface.