Some of them do have several answers. I did think of Isperia, but I figured Revelation would be at least the second option, so I left it like that. I will admit I did not think of Terror (or any others for that matter, Go For The Throat comes to mind now). Since I already have two acceptable answers for Chaos Orb (Falling Star will work as well), I suppose I ought to add some for the other ones as well.
What did you think of the difficulty, though? I was afraid that some of the hints would be a bit wierd.