Well, I do believe I have covered everything I can think of. Thus, I give you the final chapter: The Breakdown.
—You must, must, must avoid repetition. Look for synonyms, add some dialogue, or change some happenings. Do what you must.
—Don't make attacks descriptions very long, unless it is some type of super-attack that demands it. Succinctness is the way to go, there.
—If something is running on a bit long, skip scenes. Don't be omniscient about it—let the battle be over when it must.
—Use speech to keep a battle flowing, or use it as cries of pain. Taunting or ridicule is applicable, as well.
—Thought is usually used in little bursts—never make it run on for a long time. Four or five sentences, at the most.
—Separate sound effects like thock! should be used sparingly, if at all. Most sound effects should happen in a sentence, like 'the crack of the rifle.'
—For large scale battles, be descriptive when you must. If it's running on too long then you shouldn't point everything out, but for the most part you want all the bloody, gory detail.
—For the Blood-Rush Theory (BRT), your characterization has to be good. Develop your characters and make the reader want them to achieve their goals.
—(BRT) If your character is hurting, EXPLOIT it. Let the reader know how bad he's hurting, and let them feel bad for him. Outline it big-time.
—(BRT) Dues ex machina is the key phrase with this. Unexpected but totally awesome stuff that saves the hero makes the reader smile. Make it realistic, but wicked cool just the same.
—Swarm Battles (SB). Your character must sustain injury. Period.
—(SB) These are also a good place to implement the Blood-Rush Theory. He's dying, then he's flying. Don't overuse it, though.
—(SB) They must be hectic. Don't spell everything out—make a lot of stuff happen in a little writing. To an extent, at least.
—(SB) Dialogue and thought must be avoided. Period. Not the place for them.
—(SB) They're not meant to be really big. Some largeness is okay, but generally they should be around a page, maximum.
—Crazy Battles (CB). They're mostly about fast-paced, crazy action. Kind of follows Swarm Battle's guide. Make 'em full of action and maybe some tongue-in-cheek dialogue.
—(CB) Imagery is a useful tool in these. Get the majority of the details—destruction!
—Blood and gore (BAG). Imagery is very, very, very important. You want readers to wince at the reading!
—(BAG) Terseness of phrase is effectiveness. 'His leg was lopped off.' Very likely to make one recoil.
—(BAG) While imagery is powerful, you mustn't give all details of injury. Like blood loss; don't mention it every time as blood loss. Synonyms, cries of pain. Those will work.
—Have some fun! Write that fight scene your way, then read it through and edit it with some tips if you wish. It's all you!
And thus it ends. Hope it helped you, and thanks for reading. If you do have a request, I can still add it, so go ahead! Later!