The spawn was delayed exactly 1 hour. Maybe a Daylight Savings Time issue?
Event just started for me. Boss spawns in 25 mins.
would be ^&*!ing cool if this game wasnt always online tied to bull$%^& like this
I managed to do this boss twice today, got loot both times, but only got the cache once which is what I was expecting, for those saying you only get loot once that was proven wrong, so enjoy doing this fight as often as you can just don't expect additional caches