Unfortunate.
I really did enjoy this game while playing it. The graphics were crisp and animated nicely, the exploding screams of soldiers had me chuckling for the first half hour (till i muted it). The shield was a rare innovative touch i have not seen in other games, controls were fine, but i do feel it had some shortcomings.
The game doesnt change after the first 15min or so. The only visible upgrade that i remembered seeing was the size of the shield and getting triple shots. I would like to have seen more reward for spent money. I want to see a bigger gun everytime i upgrade it, i want to see heavier missiles, more armor clad armor, you get the idea.
Only 3 upgrades left in the end that i dont know if can be capd or not.
EASY. Repetitive.
Damage from enemies does not scale. I stopped moving my shield and couldnt die anyways. I would only shoot the planes to start off big chains while the ground was crowded.
I enjoyed playing for about an hour, but it got old, and i would not play it again.