Discussion of third-tier monsters.

A fresh situation. Four vampires were heading to join an army and decided to spend the night somewhere along the way. In the morning, they were attacked by 18 wandering Crusaders supported by 18 ballistae. The vampires struggled for a long time before finally defeating the attacking group and continuing on their way. If they hadn't had the Amulet of Death, they would have dealt with them much faster...:D

You've really gone too far. 6 (or at least 7!) Crusaders defeat 3 vampires. Because:
A. Amulet of Death (meaning they regenerate less HP, and therefore the vampires regenerate less HP).
B. 2 attacks! (The first is when either the Crusader deals a little damage, or the vampire doesn't lose any HP at all. The second is when the Crusader really does damage to the vampire, and the vampire doesn't regenerate)
Heh, these are vampires. He's even better than a Djinn! (but you can cast antimagic on anyone). He's weaker than a Slime. It's a pity, but balance is balance, and there's still an alternative to Crusaders. Maybe Griffins (not everyone can respond to two attacks). Crusaders may not be the most powerful, but they can definitely claim a place in the top 5 of level III units.