Played your game, it's fun and fast. Feels very much like Quake(the old ones, not Q4) gameplay-wise. It needs more stuff though, like more enemies to shoot at, because at times it feels like I'm running through a desert. Also, the enemies are kinda dumb - I got into an area, and they were just standing there, facing away from me and they weren't reacting to anything until the last one saw me. So I suggest work on the player detection.
The graphics are smooth, but sometimes there are micro-stutters for a fraction of a second. i5/rx480/w10.