I used Warrior Heroes: New Dawn, currently under development at THW. It's intended for fantasy, and what is more fantastic than Native American Amazons! Ponze had the Healer trait, which allowed him to heal both his wounded troopers with one spell. He could do nothing for the dead crossbowman. Dead is dead.
I also attempted to simulate heavy fog by only doing terrain when the conquistadors entered a new section. That was not particularly successful. I ended up using night rules of 6" visibility.