The raw art of this strip was up as a placeholder while the the strip was being finished.
Und34d skurg3!! = Undead scourge!!
Dud3!! What r j00 doing out here? = Dude!! What are you doing out here?
Dude, you bl33din cuz I clock3d you or cuz t3h zombiez got j00? = Dude, you bleeding 'cause I clocked you or 'cause the zombies got you?
Largo's weapon is a Mizuno Crush softball bat.
Yep, the punchline is from a Calvin and Hobbes strip.