Unlockables Glitch: Stretchy body When sum1 dies on an edge (for example, the edge of a cliff) with a part of their body hanging over, that part of the body will stretch and ooze down to a certain length and remain there.
Bonus sequence Play the Stubbs vs. Chief Masters Dance Battle and get a "Perfect" rating to see a bonus sequence with a hovering limousine.
Funny hand gesture Stubbs the Zombie When you throw your hand, occasionally it will put its middle finger up to you. This also happens when you jump as the hand.
Developer commentary Collect the hidden hippo heads in Insane mode to hear a developer commentary track.
Funny comments Sometimes people will say funny things, such as:
"You're gonna die! Again.." "Let me give you a hand!" "I loved that arm!" (cry) "Aw, my mother gave me that arm!" "Not the face!" "I see a Zombie." "Have some punch!" "I'll show you hard science!" "Forget science! Kill! Kill! Kill!" "My beautiful mind!" "Why did I choose science? I could've been a talk show host!"
Designer comentary Win the game once and play through again and you will find little hippo heads in all the levels walk over them to hear commentary.
Glitch: Fall through walls When you eat sum1's brain from behind them, if they are close up to a wall facing it, sometimes they will fall forward through the wall and disappear. If you are not close up to the wall, you can still see their legs. When they get up as zombies, they will be pushed back through the wall onto the floor where they should have fell. This also works with solid objects such as barriers, fences, etc.