Bought it. I am terrible at this. Always get hit by enemies behind or on my side where I can't see. Gonna watch a youtube for some strategies. I think the fact that I've never been particular good at FPS games since Doom and just play them on normal is showing here. Take that and add a 1 hit kill mechanic and I'm fucked.
Also, I know it's only $5, but this really feels a bit overpriced to me. More like a freeware or 99 cent flash game to me. Super Hexagon is 99 cents I think.