good game, could have done with a little more stratagy though, like endplanets said; more variation and more levels would do this game proud. Also: shooter only version with a moving Tesla? just a thought.
I wish there was a way to speed up the gameplay, finding some of the later levels (i had the sense to take the harder enemies out at the start) very tedious. In fact, im writing this while still playing/winning.
to get the hard badge - position your soldiers half way up the map, in cover. your first purchases should be a flamer - stick him about 4/5 of the way up, in the centre - in cover if posible once again. buy another flamer and a bazooka, then an engineer to build a bunker 1/3 the way up in centre, use remaining TP to buy comando's and snipers.