Can of Worms - Find the Purple Tootfish In the underwater stage, grab all the worms. Single worm, knotted worm, can of worms...You'll need to catch the can of worms twice and the Purple Tootfish should come along.
New High Score! - Beat the high score Play a few stages of Butterfly Shooter, this should do it eventually.
Oh, the Humanity! - Take down a Zeppelin Fifth stage of monster attack a Zepplin rolls through. Smash it.