The method is on the first challenge level (when you begin the event), you buy upgrades and generators 10 minutes apart.
20 minutes for the second challenge level
40 minutes for the third challenge level.
This method isn't for you if you don't have much time, it is for you if you have a lot of time.
This method has gotten me 3rd place and 5th place.
u/Fun_Negotiation6159 — 14 days ago