Ymondf

0.2.8
After the moon is struck down, the human form appears.

Handover
The moon shatters and dissipates, and a figure descends at the center of the arena—the second form, "Moon Phase Incarnate." The entrance has a brief cinematic: you are rooted in place, the camera presents what needs to be shown, and then the fight begins.

Four-segment battle
The human form has four independent health segments. Each time one is emptied, it refills and advances to the next form; only the final segment is true death.

Phase    Name    What it does
One    New Moon · Eclipse    Semi-transparent; blinks behind you to deliver a combo and summons phantoms
Two    First Quarter · Blade    Fires a half-moon-shaped sword wave at you; you must sidestep to dodge
Three    Full Moon · Radiance    Summons three warning light pillars (they ignite on landing) and briefly blinds you
Four    Last Quarter · Annihilation    Greatly increased attack speed; attacks carry area damage; the moon phase disc behind it begins to crack
Health bar
The human form does not use the vanilla boss health bar; instead, it uses a row of four "moon phase seals" at the bottom of the screen: the seal of the current phase is enlarged and glowing, completed ones dim, and a thin line below shows only the current phase's remaining health.