I had to reinstall my game, because my computer was corrupt. Now, I cannot complete the seedet planet anymore. I destroye all three emitters, so it should br complete then, right?
Am I missing a victory condition here or is this a bug?
With a quick glance at this level, I can see that it has the Strafer Tech and two Shield Keys. You would need to collect all three of these things in addition to nullifying the three emitters in order to win the level. Try that, and see if it works. And good luck.
Like Relli said, you have to collect all of the collectible things before you can win the level.