I really liked the base idea, the graphics are nice too. My only concern is that's repetitive really fast. I guess, like a lot of games (hm, like mine too haha), if you had more time, you'd have added different enemies and more depth.
I think you have a nice base game that you can expand a bit for not so much work and make it really a fun experience.
I streamed it too if you're curious : https://www.twitch.tv/videos/1537297068?t=3h58m5s