Imposter Sniper

Listen Cadet, Some murderers have infiltrated the field and have mixed in with the innocent by-passers.
You must stop them ASAP.
From our intel, there are 5 murderers hiding in there wearing masks. You must identify them and eliminate them before they murder anyone else.
We are giving you this Sniper Rifle to take them down, but be careful not to hurt the bystanders. Dismissed.

Controls:
Right Click to scope in
Left Click to shoot

Game made for Trijam #76
Theme: Imposters

Time Taken (According to my timer)
Sprites: 40 minutes
Programming: 1 Hour 49 minutes
Bug Fixing: 29 minutes

Total Time: 2 hours 58 Minutes  (+4 hours figuring out how to setup a Linux machine, because HTML doesn't support GameMaker Views)

Sprites made by me
Sound effects taken from freesound.org

NOTE: The Linux version is a bit buggy, if possible please use the windows version.