This one genuinely surprised me. I ended up getting really hooked on it, and honestly, I think this game has a ton of potential with a bit more polish.
If you added things like a parallax background, a smoother difficulty curve instead of sudden spikes, multiple lives to give the player a bit more room for mistakes, and maybe a final score system for replayability, I could easily see this becoming extremely addictive.
I think the strongest part of the game right now is definitely the sound design. The sound effects make cutting the branches and hitting the flies feel super responsive and satisfying, which carries the gameplay really hard in the best way possible.
I honestly enjoyed it a lot. Congratulations, because this completely hooked me in and I ended up playing for around 10 minutes without even realizing it.