Nice work! Pretty challenging, I wish I could start again from the level I lost on instead of returning to the beginning of the game.
The circuits were a bit difficult to navigate with the arrow keys; I found myself hitting walls pretty often while trying to turn.
I really liked the designs of MAL and the anti-viruses! Pretty cool character concepts there.
The music and sound were a bit grating at times to be honest. I would recommend incorporating a bit more syncopation in the rhythms as it can help create interest and keep the listener engaged. Maybe the alarm sound could be a bit quieter. Side note, was the music made in beepbox? I think I recognize the drums haha.