Another great guide, thank you! I didn't know that you would get a key on BNW level 10... should be very uncommon, since I have played that many times and haven't got a single one.
Actually I have been very lazy with BNW and unlocked Warrior and Magus/Assassin level 10 during this event, that means that I haven't Lightning or Rage sets to earn those goals... And the Zone set is being hard to get, only 1 Talisman in many tries.