if its too dark change the brightness on your screen, i did that and its perfect.
you don't get the card or badges if you do them before they are added :(
sorry for the double post but you should also look into making more responsive AI, it would be hard but i'm sure theres alot of guys that could help you with the scripting.
not enough units, you should have a stealth unit that attacks otherwise detectors are pretty much useless and those survival mode missles should be buildable.
survival mode is too hard, you should get an increased amount of ore each wave.