Not something like….. keeping three of the hardest enemy alive that require a specific weapon to disable despite that the community doesn’t like those enemies or the way the mods for those enemies work.
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Wrath of the Machine had it right during the Aksis fight. 2 of the empowered guardians who aren’t dunking has to deposit their empowered buff to a plate and gives everyone supers. Players had to be aware of where the boss was going to teleport and make sure to deposit within the short window.