Died on lvl.70 from hitting the wrong key by mistake and getting one shot.
Each round gets VERY long latter on but it doesn't get boring quickly, nor does the music get annoying so a very good game you can spend ages playing.
If I were to recommend some things it would be to change the Info at the bottom about the squares, such as have it slide over instead of poping in and out and also a physical bar for health too and if it have a signal like the outline changing when you can one-shot something that would be helpful too.
Have fun :)