I am writing a story involving 2 guys caught in a city that is full of Zombies.
Zombie Story Cliches
Bada**es Inc.
There is always at least one gung-ho gun-toting hardcore nail-eating mother****er who, at some point, will die.
The Meek Shall Inherit The Earth
The quiet, smart character who silently holds his own throughout the story will either survive without a scratch, or sacrifice himself to save the group.
I, Hero
Heroes in a story bear an overwhelming similarity to the author, in many cases. They may be long lost twins. Only DNA testing can tell.
Ad Infinitum Clause
Once the hero has secured his fifth or sixth weapon, ammunition will suddenly cease to matter.
Save Me!
The hero/heroine will at some point save a member of the opposite sex from a gruesome death. The two will then immediately fall in love.
Don't Worry. I Know What To Do.
If the story is a narrative, the main character always knows just what to do to escape a dismal situation.
Richard Dean Anderson Rule
If the main character knows what to do (see Don't Worry. I Know What To Do. above), sometimes they won't have the equipment necessary to utilize their escape plan. Don't worry, though, because the hero or a party member will know how to jury-rig such a device from the spare bits of scrap and tennis shoe laces lying around.
The Smug B**** Rule
If there's a character near the beginning of the story who is in any way arrogant, vain, or overly self-assured, that character will be among the first to die. Always. (note: nameless extras don't count.)
The Psycho Clause
Every zombie story must have at least one deranged survivor who for reasons unknown wants to kill the hero, even though the hero wants the two to work together.
Church Brainwashing Phenomenon
All religious people will turn into fanatical zealots mere minutes after the undead invade and proceed to try to kill anyone who is not a member of their school of thought.
Surprise! I'm Dead
At least one character will at some point be bitten, but will manage to keep this information from the other characters until he/she pops up as an undead. Usually, this character will be a love interest of the main character.
I'm Armed.
If the hero starts the story without a gun, they will acquire one shortly. Very shortly. Say, within a couple pages. This gun will either be a shotgun or a pistol. If it's a shotgun, it's a 12-gauge pump-action. If it's a pistol, it's a Beretta, Glock, or Desert Eagle. If the hero starts the story WITH a gun, they always only have twenty bullets or so. This gun will be discarded when they run across their new Desert Eagle a page later, which will come with fifty or sixty rounds and three magazines.
I'm Armed and Semi-Dangerous.
The first shot a character fires in a story will always miss its intended target.
I Told You I Was Semi-Dangerous.
Their second shot will always hit.
***?!
If the zombie invasion is just beginning in the story, the first person to die won't figure out what's happening even as he/she is being torn apart. Usually, they are ambushed in some way or another.
The I'm A Rotting Hottie Phenomenon
Hot chicks die a lot. This usually leads to terrible rage on the part of the hero. The hot chick in question doesn't have to be a love interest. It's just the principle of the thing that sets the hero off. The hottie will die in some agonizing manner that the hero could have prevented.
Dude, This Gun Sucks
At least once in every story, the weapon the hero is using will jam, usually at a critical juncture.
Nevermind, It's Cool Now
The gun will unjam at the very last second, though.
'Cause I'm Accurate Like That
At some point, someone will fire full-auto in a rage (usually at seeing their love interest die) from the hip. Somehow, these bullets hit their target.
The Time-Space Continuum Thingy
If I story starts off with the hero in a perilous position, it will shortly time-warp back to the beginning of the undead invasion.
I Don't Need TP
Heroes and heroines never stop to...you know...answer the Call. Yes. That call. The one from Nature. Ever.
Or Water
If they drink, it will be alcohol. Occasionally they will sip some water, but usually seem impervious to thirst.
But I AM Hungry
Heroes and heroines love MREs, and will eat at least one in every story, if not more.
Made In The USA
If the hero uses an assault rifle, it'll be an AR-15.
Or Not Made In The USA
If they use an assault rifle and it just so happens to not be an AR-15, it'll be an AK-47.
Snipe Hunting
At some point, the hero will lay his/her hands on a sniper rifle, and will magically be able to use it like an experienced sharpshooter, accounting for windage, extreme range, movement of the target, et cetera, all by themselves. Heroes NEVER use a spotter. They're badass like that.
Jiu-jitsu? I'm going to learn...jiu-jitsu?
Whoa. Heroes will break at least one zombie neck with a quick move during the story.
EDIT:
http://www.websitetoolbox.com/tool/post/morningstarsaga/vpost?id=172267