Bad

No point shootin only targeting board. Must at least have mission mode or challenge mode to make the game more fun.

Okay

I was wondering why I never play Sniper in TF2...
This is extremely well made. If you get better animations for the targets breaking, and maybe have them scroll up from the bottom and maybe from other directions, that would up this from 8 stars to 9.

Well...

It seems allright the shooting and the targets, but why cant i open my other eye? perhaps make a function where you can see the full board but you cant shoot in full screen mode. seems a little rediculous to me, also didnt like the unlimited ammo. make a reload. this is just what i think do what you want.

..needs something

maybe a timer.. but is a little monotone.. more action..
add a bullet counter and maybe use that to make it fire for the best score.. flying targets with a sniper?
Hard to see ...