I've been playing for a few days and what i can say is that it is P2W... I mean, cash comes very slowly, everything is Extremely expensive, weapon gatcha is VERY expensive, regular stuff from stores require you to pay big amounts of cash or gems (which are even harder to get). It easily took me over a day playing main story, and challenges to get 200 gems and get a 2 star (green) weapon. It is fun, but such a money grabbing game.