Strategy:



Seven of the central turrets were level 5; the remaining 8 at level 3-4. I kept upgrading them all along, and didn't start building turrets outside the parallelogram until level 50, whereas none of the latter were upgraded. Explosive research at level 6. One Finance Centre upgrade.

A missile will always hit a target after it has been launched, unless all enemies in the wave are dead. Thus, it is important to place missile turrets in a position where they can fire as often as possible, as opposed to building a separate last line of defense. Thus, my strategy would have been more efficient if I had flooded the area directly around the spawn point with missile turrets.

32727 points.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram