@iconvict: I did that for the last two missions. Basically use the power nodes to draw fire. But for weapons 2/6, they ignore all your structures. They only go for the stupid ship.
@ironlink: I finally completed weapons 2/6 on normal. *phew* ... it IS CRAZY! ... I had three THELs, three walls of normal laser, and four repairs. The walls of normal laser took out any small ships or missiles, enabling the THELs to do what it is SUPPOSED to be doing ... take out the mothership.
Oh, and I had like 15-16 un-upgraded solar cells and three storage bank. Using the solar cells, I formed a network so that the three walls of normal lasers form a perimeter, taking out small ships and missiles at range from the STUPID ship!
I tried various permutations and still cannot pass weapons 2/6 ... any tips guys?
I've completed all the other missions and sub-missions and completed 10 of the later missions in hard difficulty.
I don't understand why weapons 2/6 is set so much harder than the later missions.
For some reason, I cannot complete Weapon 2/6 even at normal.
I've completed All the others at normal, and mission 6 onwards, including the sub-missions at hard. Weapon 2/6 escapes me.
Tips anyone? :)