Thank you for your feedback! I will definitely be going crazy on how far I can bring the game.
Regarding the optimization, when I initially ran the game on browser about 3 hours before the deadline, I realised the game was running at a very low framerate as it was stuttering. I did some minor changes to the size of the textures and it improved a little. But it was really surprising to me, as running the game as an app was completely smooth, while the browser version still has parts where it feels slow/laggy.