Greater detailed head:
Achieve 100 Mutations before the original Bird Lap. When you play
the laps again, your head will have greater detail
Bosses Galore level:
Achieve 100 Mutations.
Shangri-La level:
Achieve 150 Mutations.
Defeating District Attorney:
District Attorney and his goons are very cheap. They will run
around in circles and attack when you get close. At the beginning
of the level you will have a chance to breed. When you breed, be a
Graydon. Next, run near them and they will come close and bark.
Attack the one who barks at you. Repeat this until you get near the
oasis. Then, lure them into the ditch across from the breeding
grounds. They will run around trying to escape. Keep attacking them
and they will not lock on to you. Repeat until District Attorney is
defeated.