Man, this game is hard. First, I died on the first invasion; second, on the second invasion, and next time I kept losing on the second invasion. I think that is because the invasion manager can send you two giant orcs, two armored orcs, and two dozens of regular ones. It is overwhelming but I like the game. Yes, the unit response time needs polishing, and I've only played 5 games, so I haven't yet got the grips for the game.
If you need help with translating the game to Russian later on, just let me know I would be happy to help you.
Good luck!