How to clash lightsabers

There is the Star Card called Scan Pulse which gives you the ability to reveal all nearby enemies to you and your team.

Also, there's a droid power up that can attack and scan the area. The Imperials get the Viper Probe Droid, while the Rebels use the Astromech Droid

The higher the difficulty of the single player missions, the higher the health of the AI you are battling and the more accurate they are when shooting. If you are playing as a hero you will do more damage, so make sure to be doing a normal battle and not a hero one.

Aiming down the sight does nothing to improve accuracy in Battlefront unfortunately, it merely gives more zoom. I have trouble remembering not to ADS, especially in close combat, but you'll find that the it will increase your performance dramatically (in close combat such as corridors on the Hoth levels). I hate to admit it, but "spray and pray" could definitely be said to be a valid tactic in the close quarter combat in this game.