Talk:FGO 2016 Summer Event/@comment-24118302-20160820212447/@comment-10691202-20160821031707

The CE is random rare RNG drop from any level (not just Storm or Thunder). I believe, based on some of the posts, some has gotten them from 30 AP, or even 20 AP. As for the branches, you should be able to do it, just keep it up.

In any event, this part 1 should still be farmable even after the launch of part 2 as the "remaining days" stated for the quests in-game is up till 31 August.

Best to keep the grind though, since you will have more to farm on 2nd part as well.