how to win?

What dungeons are you talking about? Huh?:D Dungeons can be easily captured on the first day if you understand how. It's usually not a good idea to attack the Hive on the first week; you need a lot of troops. It's best to take them with Angels. To win, you need to play, practice, and watch experienced players. Experience will come with time. There's no single key to success. P.S. Regarding the Rampart, it depends on the size of the Hive. But in general, the secret is to have a lot of troops. But there's no single tactic; don't play Heroes in a straightforward way.