Really really cool concept. Ran into a couple of issues. It was hard to tell what direction I'd be facing on the line which sometimes locked me out of killing enemies. The angle you're facing also seems to snap, making some enemies impossible to hit. Adding a little smooth interpolation on the direction the player is facing would be an easy solution to that. It also felt strange that you only find out where enemies will be half way through drawing your line. It felt like I could screw myself without any knowledge to go off of.