An HLF resistance member has fled from the final battle against Celestia and her ponies. He runs as quickly as he can to his home in the hopes that he can spend his final moments with his family. When he arrives, he's greeted by his wife and son's newfoal smiles. He has no choice but to kill them. As the barrier draws ever closer to his house it becomes clear that there will be no backup, that he is the last human on Earth.
He goes to his room, picks a small photo of his family from the broken picture frame.
He tucks the picture into his breast pocket, and grabs a handgun and the last of his ammo from the nightstand. He walks out into the backyard, now filled to bursting with newfoals. Celestia watches on from behind the encroaching barrier.
The man loads his gun one more time...