Auto-translated
Today, I played a Dungeon map, on the Peninsula, Veteran difficulty. I chose the Necropolis, and my opponent chose Inferno. I went for Hydras, while he went for Lizards. In the sea, I moved to 1.2.3, and the battle took place at 1.3.7. I had 71 Assassins, 25 Furies, and 12 Chaos Hydras. He had 1 Dragon, 35 Assassins, 17 Furies, 7 Minotaurs, 8 Lizards (it seems he lost some in previous battles), and 7 unupgraded Hydras. I won without any problems; he only killed 24 of my Furies.
I'm increasingly convinced that going for Hydras is the only viable strategy. It's becoming a rather one-dimensional tactic.