The graphics are nice and the sound effects all sound good, I also really like the different weapon types. It's really hard right off the bat until you get some power ups. If you die you have to sit for a while and wait for all the enemies to come charging in, it would be more forgiving if the wait time was shorter so it wouldn't be too punishing if you die early on. It was fun to play though just a bit difficult if you don't get lucky at the start.