Fun game that controls well and looks very nice despite simple graphics.
I like the retro scanline effect. It really fits with the graphics style. However, I think it makes the onscreen text fuzzy and annoying to read.
I like seeing people try 1 button control designs. You could make this a co-operative game for tablets!
Since moving and shooting are linked, it forces the player to think a little more about priorities, which I found interesting.