insane mode is realy hard mode i mean its insane but every other difficulty isn't really hard. also the movment is kinda glichy occasionally i can't move and you don't take damadge after you buy the shield 4/5
not accurate the sperm specialists were probably just your best friends and not appropriate for the little kids that play at this site. not cool =( 0/5
a tip for campaign #1 start off with one plasma cannon and a shield turret (fake turret) play till you get enough for a health booster, play till you get enough to sell the health buster and afford another plasma cannon keep the fake turret, play buy more plasma turrets, then sell the fake turret and buy the last plasma turret, guaranty a three star rating as long as you try.
a tip for building up speed jump out of the water don't turn completely flat or straight up and down but somewere in between. dive deap come back up dive again and continue doing that till you get lucky and hit a ring below and above the water and you'll sky rocket straight up in the air don't twist or do anything.