This was a ton of fun. I thought the environment was awesome, and the sound design was great, it really reinforced the atmosphere. Adding the upgrade purchasing section was fun too, that made me want to keep playing for sure. My only wish list would have been that the "bullets" or the things being shot at me were a different color than the things I could attack or a little more obvious. I kept trying to attack them and losing life from it. All around great game though.