do hoth next
That was my other option. I don't think I'd like building that. I do have a way to make the shield generator events though. Have like a raycast zone brick over all of it, then in the events, make "on projectile hit, named brick, spawn projectile 0 0 -10" Then have around 1,000 bricks off the map somewhere, below the named brick, all with events saying "On projectile hit, disappear -1." then the bottom brick, have the events say on projectile hit, empire wins.
In theory that should work, and would give the shield generator 1,000 "hit points."