"I can't progress because I'm always left with kids remaining: 6"
got the same problem at level 7 the game sometimes doesn't count the kids inside the cardboard ...
This game has actually the worst AI i have ever seen, there is a built in function to control your units, so you build a nice concave and the enemy just runs stupidly in, but since your own units are controlled by the same AI your snipers will run to the front soon and the game gets challenging.
This game lags like none else, you can play Crysis on max details without lags, this game will lag...
Another annoying thing is that the dices are spawning 100% randomly, which means that soon or later you get whole walls of dices coming down killing you no matter what you do.