You can unlock lots of different Keyblades in Kingdom Hearts Unchained X but once you’ve upgraded them a few levels, you will require much rarer materials. This How To Get/Where To Find Orichalcum Kingdom Hearts Unchained X will tell you how to find the rare material Orichalcum so that you can level up your most powerful Keyblades as quickly as possible.
Sadly Orichalcum is one of the rarest materials early in the game and there is no quick way of finding it. I leveled up my first 2 Keyblades very high by grinding the same Quests over and over again, which is also a great way to get medals in Kingdom Hearts Unchained X, but then found I needed Orichalcum.
I was only about 18 quests into the story so I spent ages searching different Quests and online to find where to get Orichalcum. I gave up. It was only then did I find out how to get it.
For every 25 Quests you complete, not including Special or Event Quests, you are awarded with a Orichalcum.