I played it awhile but I didn't use/get one of the startup pack things, just played it straight, and that really bites you in the but eventually, some of the free heroes you get are really strong. It got boring eventually anyway, and your progress really slows down.
Tacobot 3000 "Saving the world from not having tacos."
Friends don't make their friends die Hanz. Psychopathic friends do.