I will add Henchmen that also aid in your strategies and a secret various results depending on which archetypes you slay.

Or you can do the usual destroy the opponents Fortress which gives a sense of goal other than slaying every enemy.

I have also added instruction variations or "maps" before game starts, certain archetypes are better or worse on certain map types.

 (12) total maps so far...

If you kill the secret king as an alternative way to win, game over

But beware of slaying the secret cursed one, this will end your Fort.