We've been waiting to go up against Undying Mind since we first heard about it. Now, when it's done, it seems to be very disappointing. The only thing we get is the "final assault" triumph which enables the "Undying" title. Couldn't we get anything more since it's a very nostalgic D1 strike boss, like the Imago Loop that dropped in D1?
You got exactly what was hyped and nothing more. Imago Loop wasn't hyped. It's funny how high the expectations can get.