awesome start man! it definitely NEEDS leaderboards though. that would add massive incentive for players to keep playing after a round or two. maybe a menu of some sort where players can look at leaderboards and hopefully pick from a couple of other modes? either way this is a super good foundation as you nailed the smooth aiming which is something you absolultey need for a game like this, so you perfected the most important part! just keep adding to it and this will turn into something awesome, good job dude!
GameplayOriginalityPerformanceAddictiveReplayabilityUnfinished