If you could get snow storm and trap....... it may be possible to create a "choke point". But as you say, how do you deal with the ranged troops when all your army has such low HP........
Perhaps a 'fair' mod would be allowing your vamp to start with 2 necromancers. Problem being, you would still have to be lucky enough with runes to get Chaos LVL 2 AND Distortion LVL 1...........I have also got Magic Spring" from Clarissa, but your army doesn't have any 'meat shields" or summons so that's useless too........ sigh
Impy! Where are you??????????????