Pain.

That was all Twilight could feel as she fell down, she heard Tirek's spiteful laugh, her friends cry of horror, what happened?
They had beaten him, she and her friends watched as Tirek shrunk and was banished back to Tartarus, the elements had imbued them the ability to due so thanks to their friendship.

She smiled weakly as she fell, darkness creeping at the edges of her vision, she saw her friends desperately trying to reach her as she fell, they had won, but it seems this victory came at cost...

At least, she could see her friends one last time, thank Celestia for small mercy's.
Her eyes shut as she fell into a crack in the ground, created when she battled Tirek, her friends calling her name all the while...

The yet-to-be princess of friendship laid still on the cold floor, her wings broken, and her magic weak, yet the princess still lived, ignorant of the many eyes that surrounded her, a hunched figure approached her unconscious form and silently cackled.

"Evil Always Finds a Way."

(Note: Gore tag added as a "just in case" thing, due to minions blowing up and a head or two being liberated from its former owner)