Boss Battle where the boss starts out very pregnant, and she's an outlier in the game because each phase of her fight makes her easier to defeat.
You take her health down enough and reach phase two, which starts after she suddenly stops and grunts through birthing a baby.
She needs to protect her baby from you, so she now stays in one spot - very easy to deal ranged damage, or get in quick for a flurry and then back away.
Third phase starts when you make her birth another one. She tips over onto her back after being protectively hunched over, furiously pushes out her second baby - she can still do a sweeping attack, but more often than not it arcs up instead of across the field where the player might be.
Fourth phase is almost laughable, and it can end one of two ways: you can do "damage" to the babies and their mother (easy, their models are basically on top of each other) and obliterate the rest of her health, or you can wait for the target spot to appear on her.
The first option results in killing all of them without letting her birth the final one, and you can harvest some pretty good, rare materials and maybe like a key to her vault. The second option takes you through a scene where you watch her desperately squeeze out the third baby, during which you can help, and if you do you can't loot her or the vault, but you do get an achievement [Achievement: You Owe Me] and you unlock a new path for how to take out one of the end game bosses (extrenely helpful).
