If you could alter a game ending (Mayor Spoilers Alert)

[Khuutra]

Ajescent said:

I'd kill Elena in Uncharted 2
I'd slightly alter the way Faldo kills himself at the end of Valkyria Chronicals

Not a game but still-
I'd kill Cloud at the end of Final Fantasy 7 AC

This was the stupidest moment in the entire game, and that's saying something.