The importance of mental warefare in a duel.
So, first emotion, not only broadcasting your emotion leave a small micro echo in the force that will warn your opponent sixth sens(preco..) but if your opponent can read your mind you are just ****ed... Especial against a super athletic force user who can deflect blaster bolts and bullet with his lightsaber.
But Again some Jedi are so gifted in rpecognition that hidding your mind with have just so little effect.
So you can also use strong emotion burst like a mind flash bang, but to do so you need a special mind structure and be able to think act and plan with your subconscious like if was your conscious to make it effective..
Then there is the Dun Möch technic, and there is different level of mastery :
Taunting.
Will Breaking
I'm in your mind sucker. Hum I can feel your lust for me. (Kamari Vosa in Bounty Hunter the game..)
I'm in your mind and I'm using your memories and information I found about you, and I'm using them to taunt you.
Same but will breaking.
AWP Sniper. Slowly influencing the mind of the opponent in a very subttle and sneaky way to search within his mind find one big weakness and then pull the trigger open your mouth and convince that your opponent has no real reason to fight you. Or you were never meant to be a Jedi or something like that.