to win in general mode :
1) bonuses : reach 50% in investment, then antimater shield (3) + heatseekers (3)
2) concentrate your upgrades before level 10, 20, 30, 40 and 50 to kill the big tank (u must defeat all of them to get 3 points of bonus from each)
3) uograde first energy and then shield bounce, and use repair kit as much as u can since they are cheap
4) no need of sticky before level 6
5) no need of static before level 8
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@DantonQ Hi there, did not know about Diego Garcia. I looked on Wikipedia: isn't it in the Indian Ocean? ;)