The Twins are really deadly...because Atton is just a cheap fighter -.-
Best advise for killing them without wasting too many items and being killed over and over again: equip Atton with two short lightsabers and push up your stunning blow with crystals and masterly critical hit. Best way to get rid of those schuttas :-)
Best way I found to kill those sisters...
I found that equipping a sound damage pistol and using that to bypass their shields and use Atton's skill to stun them. Just make sure you equip Atton with Mandalorian Melee shields, and you're fine.
Reading the above comments has made me realize it has been way too long since I played through either of the kotor games(I sense a potential marathon coming.)
