HEY HEY HEY!
When the battleship at the top turns blue and flashes(tcan't tell what causes this, turns out it's NOT shooting the battleship), RAM IT!(actually, fly into the opening, just ramming it kills you)
After replaying the title screen animation(sans Macross logo) you go inside, where you get to use battroid mode to fight Glaugs.
Shoot the pink doors(battroids have 4-way firing) to advance inside. The second interior screen has a core that oyu have to shoot to start it exploding.
Once that's started, a timer starts counting down. Run back out, and watch it blow up.
Lather, rinse, repeat on a higher difficulty.
Far fancier game than I expected.
But yes, it does suck.