[ChEEbA]

Ok, so I'm not gonna go on about how I think this is one of the best fighting games ever, or why...doesn't need to be said.

Ok, so I need a little help from someone who has played soulblade...I'm currently playig through the edgemaster mode, and I have to use "critical edge" to defeat my opponent...'cept, I don't know what the fuck that is, nor does the moves list contain it.
NO websites have accurately explained exactly what it is, or how to do it, literally, these people are fucking morons.

So, "critical edge", what is it, and how do I do it.
Any help would be appreciated.
- B