I wonder if Kim would do an Adolf Hitler "Gotterdamerung" type of thing to go out with a bang, so to speak.
North Korea has all kinds of military, but my sense is that they are good for a sunday punch and that is about it.
Supporting an army in the field is expensive and takes superior logistics.The North doesn't have it.
If they don't get to Seoul in the first 36 hours that will about wrap it up.