I've been trying to get Evo Shards for a few days but I can't seem to find any information on where to get them. This lead me to the conclusion that maybe shards are supposed to be "random", and if this is the case it's going to discurage a lot of players from playing the game.
The difficulty spikes pretty quick and it's nearly impossible to continue the game without 4* or 5* characters, doesn't matter if you manage to get your Talismans to lvl 30 (max lvl before you need runes that you can't get because you are not strong enough... see the irony?).
All this being said, at least give us a notion of were to find the required shards to star our characters. I've been a huge Maiden fan since I was super young, I've seen them live almost a dozen times, I REALLY WANT TO SPEND MONEY on this game. But unfortunately I won't until I see some kind of response about this matter. There's no point in spending money to get things you won't be able to use.
Besides this points I really like the game, and I know it's been out just for a couple of weeks so that's why I'm posting this, it has huge room for improvement.