If you mention something that has its own page, link it.
If you are writing an article that has a specific format, you should follow that page's format. For example, this is the template for Infinity Blade III weapons. This includes elements such as infoboxes and gallery sections.
Headings and Contents
Level 1 headings (<h1> or =) should not be used. The top level heading being currently used is level 2 (<h2> or ==). Smaller headings can be used.
If the article has 2 or less headings & subheadings, there is no need to place a table of contents. This can be done using __NOTOC__. Same goes for a page that has 10 or more.
Only American English is to be used.
If you are not comfortable with English for any reason, please ask an editor who is proficient at English to proofread your edit for you.
Important Grammar Points
Words in titles should all have capital letters besides conjunctions, prepositions, etc... (such as "and", "or", "of", "in", and so on).
If a sentence contains more than one idea, it is a run-on sentence and should be split up. If a sentence contains an incomplete idea, it is a fragment and needs extension or merging with another sentence.
Formal and Technical Language
Subject-specific terminology should be used in all articles. If you are talking about swords, for example, use vocabulary relevant to swords, such as "tang", "blade", or "hilt". Don't just use generic terms like "handle" or "sharp part".
The attitude of the writing must be formal. This means that it should be professional and organized.
When writing an article, you have to write in third-person. This means that you do not use personal pronouns ("I", "we", "us") or ever use the word "you" in an article. If you wish to address the reader, then say it the way you would in a procedural text using commands, such as "go" or "climb". If it is absolutely needed, you can use "the player" or "one".
Weasel words are indirect phrases such as "it is said" or "some believe". Instead of saying this, say exactly who it is that says or believes <whatever it is that they believe>.