You should have eight ship weapons from the original campaign, and the next two will be unlocked in Campaign 2. Originally there were only eight squares for ship weapons, but Campaign 2 added the two blank spots. I’m guessing everything’s in order, but let us know if you only have six weapons unlocked.
Oh, I did not know that. I thought I could get all the weapons from campaign 1
And about the level, I managed to pass it. I didn’t realize the true power of the Line laser. And its combination with the slow tower is… incredible. I just lined up 1 Line laser in a long straight path and the enemy couldn’t even reach the next corner