[sub]Why was this necro'd from over a year ago?[/sub]
[Prototype] wasn't that hard for me, in fact I can recall passing through it fairly easy till that one mission involving Ms. Greene later on. But I eventually figured it out, I can't for the life of me remember how... and by the look of how much time has passed, I'm sure you completed it as well.
So, congrats. I guess.