Fun game lots of polish. Really enjoyed the screen shake and particle effects. Also the upgrades were really fun. One thing I noticed with the upgrade that gives you a second reticle. Is I thought my second stream of bullets were fire 90 degrees from my first not directly behind me since that's what the visual would imply. I also wished the difficulty ramped up sooner or more gameplay elements were introduced sooner. The first few levels blend together and I'm pretty sure a few room layouts get repeated