User blog comment:Linathan/Squad Spotlight: Fun Being F2P Part 1/@comment-24277289-20151019143549

As a F2P, these are completely achievable, but take into account the initial difficult of a) beating Fei's dungeon, b) beating Vargas's GGC, and c) getting those 6 Heroes, which is completely random, and raising them to 7 star.  It's possible, but extremely annoying to do.