First game? Good job definitely! I feel like the movement could use some inertia to tap in that rage inducing gameplay loop even more. But it's simple fun and that's good enough :)

Cool and small game, congrats on your first game! If I would add something in your game would be more speed on the things when we are in a higher dificulty.

Fun game, simple concept but done well. One thing that could be a bit tricky to implement(not something you would want to do in this timeframe) would to make the difficulties be a bit smarter. As it stands, hard mode just spams things, and sometimes seems practically impossible, which isn't the best feeling sometimes. Overall, a fun game to play (i got 120 btw)