Reminds me...
somehow it reminds me of another assassin-game here at newgrounds (to bad I forgot the full title).
Yours is much more colorful, but there's no chance in upgrading.
In fact, you scroll through the scenery, search the person and BLAM...
Would be a tad more realistic if your scope shakes (especially after fast moves) and if you could add some difference in the targeted and the point actually hit. Since: no rifle is 100% accurate.