Dude, we need a better discription...I mean, according to you is the tileset good? Are the units balanced? Is the game itself balanced? Personaly I get anoyed by Sniper Maps just because they end up being EXACTLY the same, but still. Its a tip that'll help you get feedback and way to fix w/es wrong.
ADDITION:
Forget the tileset, its

...all you did was add the stacked rocks doodadds throughout, heres a tip: Cliffs, trees would be an improvement for tileset, cover, and flat out gameplay. I give you 1/10. Better luck next time.