User blog comment:EXDarkLight The Ephemeral/Tower Event Rankings/@comment-35296548-20180413180620/@comment-35296548-20180416142855

Sadly not enough,I reached rank 1089 by spending 7 ancient valkyrie crystals but there was still 13 hours left of the event so my rank went further down. Nonetheless It was still a good trial and error run. The most obvious thing I've learned is that it's best to save the crystals when you have at least 2-3 attack runes in rune time,any less would slow you down and waste some extra time.When I had 3 attack runes in rune time I managed to clear 15 rounds with 5 minutes to spare compared to having none at all where I was only able to fit in 10 rounds and just finishing on time.