I have made horses with spiked armor and want to make it so that charge can kill troops when hit i searched the files and forums for 2 days and can't find if it's possible I have changed the horse charge to cut damage but that does nothing
Nah, he probably means he wants them to die and not get knocked unconscious.
You should ask this on the modding board, not here. Also make clear wether you're modding Warband or M&B.