In the tutorial, "lose less allies on past stages to get them back" should read "lose FEWER allies". You use fewer if you can count the number of things there are fewer of, such as allies, and less when you can't count the thing which there's less of, such as time.
 "Pre-Civilization: Stone Age"){kind=icon}
 "Sugar, sugar 2"){kind=icon}
 "Bullet Audyssey"){kind=icon}
 "Little Cave Hero"){kind=icon}
 "Top Defense"){kind=icon}