I ADORE this SO MUCH, the story feels so personal with you/Eight, there is no WAY there could've been a better end, it feels like the entire history of the series is backing it up to make for the most climactic ending ever, the story of Eight escaping a hole, only to be dragged down to a trap, and having to fight their way out of it is AWESOME, the music is at the series PEAK after you get the fourth thang, it's still absolutely crazy to me just HOW GOOD THIS IS.
The gameplay system of the stations is really fun and DIFFICULT, I really can't put into words just HOW MUCH I love this DLC, the characters are funny and the way they interact with each other is too, but as I write this I can't stop thinking about just how good of a story it has, not even mentioning Commander Tartar being cool as hell, he's extremely hypocritical, and at this point is so far removed from humanity and their wishes that there really was no other way than to destroy him, he's straight up just a villain.
so far nothing has beat this DLC, although Return of The Mammalians did come close, the ending sequence all the way from the escape is 1000% times better than the rocket infiltration sequence in Alterna.

I love it so much :)