Hey.
While the increase rate of enemy occurrence does increase the engagement a little, it still gets monotonous after a while (I quit after wave 6). The graphics, and audio were good, but consider adding an option to mute music and keep sounds. Some extra items would be nice, too. Doesn't seem quite right for a tank to by stuck in a single spot. Change it to something that's designed to be in a fixed position, like a bunker or guard tower. Tanks are mobile units. The enemies' designs are questionable, too.
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- Ziro out.