How to defeat Death and its vampires?

Against Death Vampires
Life Crusaders are good. There isn't another direct counter. You can also use fire elements, dragon robots, etc., but that's not a complete counter.

Do you mean counter - cortatak, retaliatory attack? If so, then the attack of the Crusaders, i.e., double attack - yes, it can be used against the abilities of the vampires. But only on those maps where it is possible to have approximately the same number of vampires and crusaders, i.e., on small maps. Because on large maps, the Necromancer, after leveling up, will practically create vampires after each battle, and they will defeat these crusaders in numbers. In such cases, it is preferable to use golems, ifrits, etc. Those that prevent vampires from regenerating.