That music...I was beatboxing it all along, very cool!
Played for a while, and they kept coming, and they kept dying. Lack of visual effect for the melee weapon is quite unsettling at first (since melee is the first weapon and not seeing visual cue made me think that left click was not a thing) but I got over it quite fast when that damn sluc appeared on the screen.
Definitely range weapon all the way.
Nice game, and nice ambiance, fun and enticing.
Gotta buy a new mouse now (note to myself, autoclicker is a must)