A really nice and simply game. A bit easy in some respects but works really well.
I liked how smooth the movement worked, flowing really nice and controlled as I expected.
I had more difficulty handling when enemies appear around me. It took me a while before I noticed the number in the corner saying how long until the next wave, and without that it felt very random. Making that number easier to see or closer to where you would be looking would help a lot.
Overall, I loved the simple music and feel of the game once I got used to things.