More for martial arts or hand-to-hand in general
What a character’s wearing will affect how they fight. The more restricting the clothes, the harder it will be. If they’re wearing a skirt that is loose enough to fight in, modesty will be lost in a life or death situation.
Jewelry can also be very bad. Necklaces can be grabbed onto. Bracelets also can be grabbed onto or inhibit movement. Rings it can depend on the person.
Shoes also matter. Tennis shoes are good and solid, but if you’re unused to them there’s a chance of accidentally hurting your ankle. High heels can definitely be a problem. However, they can also make very good weapons, especially for someone used to balancing on the balls of their feet. Side kicks and thrusting kicks in soft areas (like the solar plexus) or the feet are good ideas. They can also (hopefully) be taken off quickly and used as a hand weapon. Combat boots are great but if someone relies more on speed or aren’t used to them, they can weigh a person down. Cowboy boots can be surprisingly good. Spin kicks (if a character is quick enough to use them) are especially nasty in these shoes.
If a character is going to fight barefoot, please keep location in mind. Concrete can mess up your feet quick. Lawns, yards, etc often have hidden holes and other obstacles that can mess up a fighter. Tile floors or waxed wood can be very slippery if you’re not careful or used to them.
Likewise, if it’s outside be aware of how weather will affect the fight. The sun’s glare can really impede a fighter’s sight. A wet location, inside or outside, can cause a fighter to slip and fall. Sweat on the body can cause a fighter to lose a grip on an opponent too.
Pressure points for a trained fighter are great places to aim for in a fight. The solar plexus is another great place to aim for. It will knock the wind out of anyone and immediately weaken your opponent.
It your character is hit in the solar plexus and isn’t trained, they’re going down. The first time you get hit there you are out of breath and most people double over in confusion and pain. If a fighter is more used to it, they will stand tall and expand themselves in order to get some breath. They will likely keep fighting, but until their breath returns to normal, they will be considerably weaker.
Do not be afraid to have your character use obstacles in their environment. Pillars, boxes, bookshelves, doors, etc. They put distance between you and an opponent which can allow you to catch your breath.
Do not be afraid to have your character use objects in their environment. Someone’s coming at you with a spear, trident, etc, then pick up a chair and get it caught in the legs or use it as a shield. Bedsheets can make a good distraction and tangle someone up. Someone’s invading your home and you need to defend yourself? Throw a lamp. Anything can be turned into a weapon.
Guns often miss their targets at longer distances, even by those who have trained heavily with them. They can also be easier to disarm as they only shoot in one direction. However, depending on the type, grabbing onto the top is a very very bad idea. There is a good likelihood you WILL get hurt.
Knives are nasty weapons by someone who knows what they’re doing. Good fighters never hold a knife the way you would when cutting food. It is best used when held against the forearm. In defense, this makes a block more effective and in offense, slashing movement from any direction are going to be bad. If a character is in a fight with a knife or trying to disarm one, they will get hurt.
Soft areas hit with hard body parts. Hard areas hit with soft body parts. The neck, stomach, and other soft areas are best hit with punches, side kicks, elbows, and other hard body parts. Head and other hard parts are best hit using a knife hand, palm strike, etc. Spin kicks will be nasty regardless of what you’re aiming for it they land.
Common misconception with round house kicks is that you’re hitting with the top of the foot. You’re hitting with the ball. You’re likely to break your foot when hitting with the top.
When punching, the thumb is outside of the fist. You’ll break something if you’re hitting with the thumb inside, which a lot of inexperienced fighters do.
Also, punching the face or jaw can hurt.
It can be hard to grab a punch if you’re not experienced with it despite how easy movies make it seem. It’s best to dodge or redirect it.
Hitting to the head is not always the best idea. It can take a bit of training to be able to reach for the head with a kick because of the height. Flexibility is very much needed. If there are problems with their hips or they just aren’t very flexible, kicks to the head aren’t happening.
Jump kicks are a good way to hit the head, but an opponent will see it coming if it’s too slow or they are fast/experienced.
A good kick can throw an opponent back or knock them to the ground. If the person you’ve hit has experience though, they’ll immediately be getting up again.
Even if they’ve trained for years in a martial art, if they haven’t actually hit anything before or gotten hit, it will be slightly stunning for the person. It does not feel the way you expect it too.
Those yells in martial arts are not just for show. If done right, they tighten your core making it easier to take a hit in that area. Also, they can be used to intimidate an opponent. Yelling or screaming right by their ear can startle someone. (Generally, KHR fans look at Squalo for yelling)
Biting can also be used if someone’s grabbing you. Spitting in someone’s eyes can’t hurt. Also, in a chokehold or if someone is trying to grab your neck in general, PUT YOU CHIN DOWN. This cuts off access and if they’re grabbing in the front can dig into their hand and hurt.
Wrist grabs and other grabs can be good. Especially if it’s the first move an opponent makes and the character is trained, there are simple ways to counter that will have a person on their knees in seconds..
Use what your character has to their advantage. If they’re smaller or have less mass, then they’ll be relying on speed, intelligence, evasion, and other similar tactics. Larger opponents will be able to take hits better, they’re hits may be slower depending on who it is but will hurt like hell if they land, and size can be intimidating. Taller people with longer legs will want to rely on kicking and keeping their distance since they have the advantage there. Shorter people will want to keep the distance closer where it’s easier for them but harder for a taller opponent. Punching is a good idea.
Using a person’s momentum against them is great. There’s martial arts that revolve around this whole concept. They throw a punch? Grab it and pull them forward and around. Their momentum will keep them going and knock them off balance.
Leverage can used in the same way. If used right, you can flip a person, dislocate a shoulder, throw out a knee, etc.
Just thought I’d add in here.
