first few fights will be winnable . you get few stacks more heroes when the enemy triples/quadruples in quantity. the resource distribution is poor. will award 1 or 2 upgrade materials but the nxt upgrade req x10 before. there is reward in map completion but cant play complete map unless you unlock by paying in game gems, and gets expensive as you progress further. im fine with spending but this game will really be expensive. hey devs, you ever played this? helloooooo