I struggled a bit, perhaps it's the Chrome browser or something but it seems like my aim was totally random which made playing the game very difficult. I would try to line up enemies so that I could take out a few with one shot but they seem to move faster than I did so I could never really get more than 2 or three lined up and then since the aim was buggy I was rarely able to hit them. It was also difficult to select other weapons to use, like the scroll wheel was too sensitive or something (Which also could have been an issue on my end.) I like the concept though. It reminds me a little of playing COD Zombies where you get a group of enemies following you so that you can more efficiently take them out. A little fine tuning and this could be a fun time killer.