Loved the game, short and sweet. Just the achievements are a bit too easy, I didn't even look at the achievement page until I had finished and had already got them all on my first try. So maybe give something a little bit harder there. However, loved the game a tonne!
I was thinking about the story (oh my) and I realised that it is a little strange that the people are trying to fight to get OFF the planet. It does come to bid the question of why they actually went on that planet... hmm...
@cifdtruckie Try getting energy first, when you get more than 5 start building defencive structures, making sure that you build blaster around your structures near the city, the mortars over walls can get rid of a deep pool of the creeper stuff! If you are in a lever with SAMs, cover a area around your city until you know where the spawn stuff are coming from, then move all sams to that side :p Finally make sure you got 100 energy by 10 mins! Reactors help tonnes also. use them now and then a lot. Speed is only for a laarrggee area