It's not the "hardest" but it is VERY hard. You need to kill that yellow circle. You also need to survive the attacks. If you have 0 health you die. If the yellow circle has 0 Yellow Health then you win. It's possible but don't ask me because it's too hard for ME! You get a heal point every 0.5 seconds, 35 heal points is 30 health. Arrow Keys - Move Space - Shoot
(The Release Update) Version 1.0 - First Version (The Backround Update) Version 1.1 - Black Backround, and Win and Loose screens. (The Music Update) Version 1.2 - Music. 6 Different Music Songs! Version 1.2.1 - Fixed Health and Yellow Health bug. Version 1.2.2 - Decreased Enemy Damage by 1 (The Healing Update) Version 1.3 - 35 Heal Points = 30 more health, 1 heal point every 0.5 seconds.