The shell is destroyed. The core is now visible. The form of a female child lies dormant inside.
This is the true form of the world eater. The enemy they spent half their lives preparing against.
The moment the colony understood what it was capable of, the Bird was helpless against their continued assault. It only took them two weeks to subjugate the one feared by all.
That's it? Is this all the Evil God is capable of?
The team is once again reminded of the fact that they are now anything but normal. They are more machine than flesh. They have discarded their mortal bodies in order to slay a god.
Ironically, the core's immature form brought comfort to their hearts. They can now live with the excuse that the great evil was plucked before it was ripe. It's not that they've grown to be as strong as a world-destroying entity, it's just that they've slain it before it reached its full power.

Chasing away her doubts, the one who wields the God-slaying spear readies her weapon.
With a great leap, she impales the childlike form.