Have a weapon with no ammo? Just walk over a similar weapon, and the ammo magically transfers to your total count.
Ammo belts? Who needs 'em. You just pull clips out of thin air until you run out of bullets.
A character wielding a big sword is bound to have personality/emotional/identity issues.
A character with large tits will have them bounce really high by moving their foot.
Even though your character is small and is physically incapable of lifting heavy objects without a magical amulet, he still has the capability of carrying 100 swords/guns/spears/knives/bombs/potions/
etc.
All other party members do not appear in-game unless it's a battle or a cutscene.
Long hallways is a dead giveaway that something is, and will go wrong.
When checking the map for items, the distance between you and that much needed health pack is going to be long, and for added fun, there will be a seemingly endless supply of enemies between you and that health pack.
Any outside law enforcement is unavailable, and when they are, they are nothing more but cannon fodder.
The guy you are supposed to escort will always run in the wrong direction, not stay put, or run headlong into enemies.
In a room filled with desks, an explosion will only push objects that are on the side or on top of the desk, but not the desk.
Paper posters provide the best protection against bullets.
Glass can easily be broken by a person merely walking into it.
It's a proven fact that any civilian that lacks any formal military training will automatically know how to fire, reload, and maintain every firearm, non-human weapons included.
It's also proven that said civillian is capable of driving any vehicle, human or not.
You are a very durable human being. All other characters are not.
When you take 100 bullets to the chest, those wounds can be easily be healed by sitting in a corner for a couple of seconds.
A person shot in the foot will bleed like they had their jugular slit.
Any human can swim in ice cold waters in Antartica.
You can survive grenade explosions at close range.
Bullets fired from a sniper rifle always flies straight, regardless of gravity, wind, or the coriolis effect. Similarly, this also applies to bullets fired from any weapon as well.
Your aim is always steady.
Find a locked door? You can always get that door unlocked by finding a poorly stored key that is very shiny.
Find a blocked pathway? There is always another way around.
Restoring the power to any building will have something go wrong.
Any powerful weapon will require the most effort to obtain, then will require the same amount of effort to deal with the enemies spawned after said weapon is picked up.
The ability to swim is usually added in the sequel.
When you exhaust your oxygen supply from sprinting, jumping in water results in death.
Flashlights can never be taped onto any weapon.
Said flashlight requires no batteries.
Enemies are never alerted to your flashlight beam.
A person in a gigantic mech suit can be taken down with pistol ammunition.
Said pistol can also kill any enemy with thick body armor.
Swords will always beat a gun in close quarters combat.
Said cliche also applies to knives.
Even though you are walking through empty, open plains, enemies will attack you.
Any random battle will always occur in a desolate area that is isolated from the area you were originally in, with geographical features inconsistent to the area that you were previously in.
When the world is to end in one day, a player can have many overnight rests and the world will not end.
A character wearing nothing more than a t-shirt and shorts can walk through an Arctic environment without suffering from hypothermia.
You can land from a long fall and not have to worry about broken bones.
You can drive any vehicle into walls at high speed without having to worry about either the car being damaged or being thrown through the windshield.
Most large security doors can be opened by a poorly concealed, oversized button.
An overlord that makes an impenatrable fortress will have a map lying around with locations to keys, powerful weapons, and hidden pathways in said fortress.
The main character always has some hidden ability that cannot be tapped into will either have it used accidentally or on purpose, usually proclaiming he did not know about it.
Said ability usually results in a shaman like figure coming out of no where to explain that his ability will save the world, resulting in that main character denying such a thing.
Female characters have no other use besides magic.
Games will always break the fourth wall to explain how combat works.
Characters will always know what the "X" button will do.
When you have to defend a vehicle, it is always old and poorly built, and will break down when it hits a bump.
Need to repair a contraption, switch to any class with a repair ability, and watch said contraption be repaired by being hit by a wrench.
Said class with a repair ability can also just use a blow torch to repair wooden carts.
Double jumping is possible.
The hotter the girl, the more likely she is to betray you.
Said girl will still be lusted for by the main character.
Upon first confrontation with said girl, the main character will hesitate to kill her, which results in her escaping.
I just listed every cliche that I could pull off the top of my head.
Do I win?