Has some promise, however I noticed the game has a bad habit of reverting progress. Rather bad bug when it reverts several hours or a days worth of progress.
Read the comments and they are accurate, paywall right before the badge. Unless you want top spend money then the 2nd badge will be exceedingly hard. Steaming pile of pile of pay 2 win. Instead of fun it becomes noxious. I like being treated like a game player and not an ATM machine by a game company. I tried honestly to play the game, it is not playable and forces you to rate it 5 stars for a bonus, so that is why the ratings are higher and the comments are negative. Oh, and really horrid English translations to.
Good game until you are forced to buy to continue the game or you effectively get stuck. Pity, I liked the game series until now. I understand the need for profit, but not when it ruins the game.