Very cool game.
Only thing I'd reccommend is adding a harder game mode, maybe one with less dynamite or more units. I've never played this or any similar game really, but I just beat it and got all but 2 medals in about 15 minutes.
Other than that, it's a kickass game, enough to make me want to play more for sure. This is one of those games that deserves a sequel with a bit more to it.