Level 39

I have gotten all the warriors except the last one. The timer is down to 1 star and I have killed every Manchu that has appeared. What can I do to get the last warrior to appear? Thanks

I discovered the trick on my own.

Do not upgrade the furnace. Once you buy off the first warrior, build 10 items. The second will appear. Buy him off and build 10 more. Continue this after each warrior appears until you have bought off all warriors.

REMEMBER, build only 10 items at a time.