Super hard keyboard controls 😂
Maybe if you're using an unconventional keyboard add movement through arrow keys.
Apart from the movement, the difficulty scaling needs a bit of work, there are way too many enemies at the very beginning, Maybe the movement makes it feel harder than it is but I feel like there should be a bit fewer enemies till the player starts evolving and getting a bit better first.
That being said its a nice concept, and I like the art style.
Good job!