In Dares of Eternity on normal difficulty you can and will get a score of at least 180,000 with out the lighting round as long as you don't rush in there and kill the boss.
You have to be considerate of others. Some of us are trying to complete a star horse bounty that requires us to finish the match with a score of at least 160,000 or 180,000 and we don't like having to do the bounty all over again simply because a few people are in such a hurry to kill the boss.
So the next time you play don't finish the boss off unless the score is at least 180,000.
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Only time you shouldn't melt the boss is when there is champs left. Legend is easier then normal because guaranteed heavy ammo in the second and third rounds.