These events after reading comments are enjoyable for higher levels who had gem pits and Gold towers or is using their wallet to buy gems for the event. For the rest of us who belong to Level 26-35 and Level 36-45 this is quite impossible to complete unless you are on 24/7 and loads of real cash.
First of all for example lvls 26-30 has it very hard to accomplish the same as 31-35 and same with 36-40 the quests are extremely hard and imo those levels should not be in the same class.
This was very badly thought of for lower levels. I gave up and I am lvl 41.
I got nothing of interest till I finished, so I bought 2 building certificates in vain with gems from Excelsior, my gems vanish just as smoke in the sky, got nothing what made it worth to spend them, I also used some Gems on Explorers.
I read so much how high levels gain much gems, I didn't gain gems to justify what I had to waste in order to try to finish this event.
Doing this event made me remember partially why I left 4 years ago, it was after some event what was a screw up for low levels just as this one.