Most of my unique blades were obtained randomly by activating common and rare core crystals. Yet, some of those Blades were obtained by putting some effort into certain activities. E.g.
Kasandra's core crystal from rumor, Vess and Praxis crystals from side quests
So, how much Blades are obtainable through some activity in game, not activating Common/Rare/Legendary Core Crystals? Obviously I'm not counting Core Crystals you get by plot, e.g.
Wulfric or Rok.