A Cruncher eats generators in exchange for 100 times more pixels being generated by that generator. This makes the ‘No starting bonuses’ challenges possible without much trouble. You should be able to do the 300 Gen I. That will give you 50 Gen V as a starting bonus to help you with the 225 Gen V.
 "DmasterD"){kind=small}
 "Trounk"){kind=small}