Green ball is my friend

Use WASD or arrowkeys to move. Left mouse to aim, click to shoot. Protect your green friend from the evil red circles. Once your green friend is under the 50 hp, you will become angry and shoot faster. This game is a submission for the game jame Trijam #157 with the theme "Angriest Protagonist".Music used: https://pixabay.com/music/upbeat-insurrection-10941/