Pause the game and quit within 10 seconds of starting a game for the Maniac badge. A lot of people seem to be having trouble with this one, so copy this to keep it going.
An N.C.+ is either a stronger version of the red cells, or a stronger version of the green cells. The stronger red cells are a bit darker than the normal ones, and the stronger green ones are smaller and appear to have thin green "barrier".
At 2o achievements, you unlock a new power-up that kills all enemies on-screen. At 4o achievement, you unlock a new power-up that gives youa shield. At 6o achievements, you unlock health regeneration.
*sigh* I should've realised sooner... For anyone having trouble with the Maniac badge, just pause the game and quit within the first ten seconds. You don't actually need to kill yourself.
 "Dinowaurs"){kind=icon}
 "Luminara"){kind=icon}
 "Electric Box"){kind=icon}
 "Four Second Frenzy"){kind=icon}
 "Death Dice Overdose"){kind=icon}
 "Cell Warfare"){kind=icon}
 "Whiflash"){kind=icon}
 "The Kongregate Status Calculator"){kind=icon}
 "Chaos of mana"){kind=icon}
 "Detox"){kind=icon}