This page of our guide to Star Wars Jedi: Fallen Order describes the final duel with The Second Sister which is the final battle of the entire story (without counting the confrontation with Darth Vader). The duel takes place in the final part of the sixth chapter of the game. Our description of this duel contains detailed information on all attack types used by The Second Sister. Also, we suggest how to effectively expose Trilla to Cal's attacks.
The final battle with The Second Sister will take place during the infiltration of Fortress Inquisitorius in Chapter 6. The main character has to make his way to the Interrogation Chamber. Interaction with one of the interactive panels will lead to the sudden arrival of Trilla. In comparison to previous battles with Second Sister this duel will not end prematurely. You must deprive Trilla of all her health points (her health bar has to drop to zero).
The Second Sister uses a double-bladed lightsaber. She uses her lightstaff to perform various strikes and series of blows. Don't try to interrupt them with standard attacks.
Use the same tactics as during the duel with Malicos - launch your attacks as soon as Trilla finishes her attack sequence. Also, you can prematurely interrupt her attacks with Force Push ability. Trilla is unable to completely block your Force Push attacks cause she is prepared for them - keep in mind that she can lose less stamina points than if one of her attacks was interrupted.
Trilla has the ability to move quickly around the arena. Even if she's standing relatively far from Cal, she can appear right next to him in no time at all. You must always be ready to evade her attack(s) that will begin right after she teleports towards you - jump away from her or try to block/parry the upcoming strike.
Trilla has many unique attacks at her disposal. The most serious attack is the attempt to capture (seize) Cal. This occurs after Trilla drops a blinding flashbang grenade. If you get captured, you will lose a lot of health (example shown in screenshot 1). The only way to avoid this attack is to jump backwards or to the sides at the right moment (example shown in screenshot 2).
Another red attack of Trilla is a shock wave. It moves quite fast so you have little time to make a double jump and avoid collision with the wave.
Also, Trilla has more traditional strikes and blows at her disposal. These are lightsaber stabs, a twisting-slash attack and a lightsaber ground strike. Combat tactics are quite obvious in such cases - don't try to block these attacks but jump backwards or to the sides to avoid getting hit.
The Second Sister, just like Malicos, knows how to throw a lightsaber. The best reaction to this type of boss attack is to use your Force Push power. This will immediately stop any such attack. So, you won't have to worry about being hit by a flying lightsaber or worry about using block at the right moment.
The most effective technique to gradually weaken your enemy is to activate the Force Push each time she tries to start an attack - then run towards her and launch a series of attacks with your lightsaber. Even if Trilla doesn't lose any health points at once, her stamina bar will be significantly depleted. More attempts of this kind will be more successful. Use standard attacks only if you have exhausted your Force bar.
During the battle, you may be forced to clash and wrestle with lightsabers - quickly press the indicated button to win the sequence. After you win the duel with The Second Sister, Darth Vader will appear. You will not be able to take part in any fully fledged battle against him, but you still have to try to survive. The confrontation with Darth Vader has been discussed in detail in our walkthrough of the sixth chapter of the game.