The lignering particles look a bit weird. I'm guessing they are supposed to be snow but I'm not sure that it works all that well. If you're going for more of an ice crystal feel then you need to make them twinkle a bit and maybe have more crystaline shapes, sharper edges. For your ion laser thing, have you thought about…
The problem with the snow feel on the sword is there's something in UDK that's going on. When the camera is pulled really far back, you can see them all, but up close a bunch of them disappear. If that wasn't a problem, I'd reduce the life on the snow a bit so it just sits closer to the blade for a more subtle approach.…