It feels like the enemies are spawning too quickly for me to do anything about it, but I also just really truly suck at survivor-like games. It's also hard when you can't see them spawning behind you. I don't think I lasted over 30 seconds in any of my playthroughs, so didn't even really get upgrades to see if they would help at all. 

The movement feels pretty polished and the sound of the bugs is creepy as heck, so great job on that.