During the tutorial, the game asks you to complete a mission that requires 2 valkyries, but the thing is, at that point it has only given you 1. So you have to go out of your way, discover how you get another one (a sort of gacha system), maybe not even get another (as I failed) and get stuck with a flashing finger pointing at the mission you can't complete for hours until you somehow get another one. Did they play their own game?