#《Resident Evil 9: Requiem》 Final Boss Fight: Defeating The Girl
Switch back to Claire’s perspective for the final confrontation with The Girl. Having followed you all this way, this is the final encounter to end the threat for good.

The core strategy to defeat The Girl is to unlock the overhead roof hatch and let sunlight fall directly onto her.

Head down to the lower level of the laboratory and reboot three power distribution units. These units are placed inside the Chemical Treatment Room, Control Room and Storage Room, and each needs a different method to activate.

No matter which unit you activate first, always maintain distance or create distractions to avoid being interrupted by The Girl. Use the Requiem revolver to slow her advance, or take advantage of standalone light installations to block her path temporarily.

Power Unit Activation Details
Control Room Unit: Retrieve the Crank Lever from the nearby archive room first. Circle around to draw The Girl away, then start the device.
Chemical Treatment Room Unit: Hold down the switch lever continuously. Move to a safe position beforehand to avoid sudden interruption.
Storage Room Unit: Simply press the control switch to activate.

Once all three power units are online, take the elevator back to the top floor. Open the ceiling hatch, then focus all remaining firepower on The Girl to defeat her.
Return to Emily afterward, marking the end of Claire’s main storyline in Resident Evil 9: Requiem.