It just doesn’t stop.
14 points
In the patch notes somewhere, it says you need to do the final fight again. Reload from the brainstem works.
3 points
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I reloaded a save I had from within the fight. I can’t get those spoiler tags to work, so I can’t get into more details without revealing the finale, but you definitely don’t have to repeat the whole fight. You just need to get to a point before it jumps into the epilogue to trigger it.