Very nice game! It’s really well made and I had a lot of fun playing it. I got to around level 6 or 7 and really enjoyed it. :)
I think you could easily release this game, and I’d especially suggest putting it on Android as it would be a great fit for mobile and also Steam. There are already way too many low-effort 3-day Unity games and fake-looking projects out there. We need more games like this — polished, fun and actually made with passion. Great job! 👍