Elfen Lied's manga's ending has many ambiguous points, but at least it is possible to make up a satisfying explanation for most of them. One I couldn't make anything up for, however, was this:
There is an agent spy from a different research facility whose name I forgot. He helped the assistant escape during the Diclonius outbreak in the manga by holding the elevator brakes.
He was cornered, and it is suggested that he was killed. Until the end of the manga, of course, where apparently he survives and has no idea how.
I have no idea what saved him. What was it?
For a moment I considered that an earthquake just made a bigger hole that killed the opponents, but as far as I can remember, there were no more earthquakes at that specific moment.