Hacked Life
Create a text file init.txt in the main game directory and write the following
in that file:
cheat_deathless_player 1
cheat_infinite_ammo 1
These two lines enable infinite life (life meter will still go down) and
infinite ammo (ammo will still go down).
Bonus sequence
Play the Stubbs vs. Chief Masters Dance Battle and get a "Perfect" rating in all
rounds (including the bonus one) to see a bonus sequence with a hovering
limousine.
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.."
"I see a Zombie."
"Have some punch!"
"I'll show you hard science!"
"Let me give you a hand!"
"I loved that arm!" (cry)
"Aw, my mother gave me that arm!"
"Forget science! Kill! Kill! Kill!"
"My beautiful mind!"
"Not the face!"
"Why did I choose science? I could've been a talk show host!"
Funny hand gesture
When you throw your hand, occasionally it will put its middle finger up to you.
This also happens when you jump as the hand.