I appreciate this game and it's custom soundtrack, but there is a mild case of not telling the player that the camera is moving, no auto clicker prevention (it also makes you invulnerable?), the "Move to a corner the whole time" to run away from enemies cheese, A lack of actual ending other than audio queue when you beat the boss, weird bug that makes a million enemies spawn when I die, crashing my browser, only 3 enemies counting the boss, and making me wait 15 minutes for a song to play?
This.
Game.
Is.
So.
Impressive for a first itch project! I have 30x the amount of criticism about my own first game, and that is a fifth the length of yours. I may not have enjoyed it that much, but in reality it's unfair to compare it to popular steam games that have experienced developers behind it. Yes, this review is negative, but I incentivize you to continue improving. I'm only giving my objective honesty because information like that would have helped me to improve a lot.