He will have dark Force power which is in a form of electricity and he will charge that force onto you and you have to move the control buttons and target the Darth Sidious to dodge it. He will begin to throw charges of electricity toward you which can be noticed by the highlight on the ground. Just move out of the highlighted area and you’ll dodge it. After that attack, he will strike electricity in two directions and rotate in a circle so you just have to jump over the electricity that he’s shooting. After these three attacks, he will get tired and his health bar and three heart icons will be shown on screen and you can attack him at this very moment.
He will also have two major attacks here, one of them is a ground stomp which is easy to dodge just get out of the area highlighted on the surface. The other one is where he jumps toward you and attacks that area where he jumps. The area will also be highlighted so you can just move out of the area in order to dodge. Hit him with the lightsaber combo attacks to get him low on HP or you can throw items at him by using Force power. Once he’s low he’ll come to you and smash the attack button to completely deplete his health bar.
He will attack us with the Dark Force power and we have to rapidly trigger the attack button and he will take us up on the Senate meeting area. Here we will fight him again and he will only use his stomp attack on these flying platforms so just dodge it and hit him with the combo attacks.
After you deplete his health bar for the second time he will run from the fight and set the flying platform on fire. Just jump on the other platform and defeat the troopers on the platform. Stand in the center of the platform as Master Yoda and switch to Captain Typho and use the terminal to enter the input directions.
You will reach right next to Darth Sidious’s platform, just jump there and you will fight again he will use the stomp attacks and his basic sword attack so just dodge it and deal damage to him by hitting the combo attacks. After you have depleted his health, he will jump on the other platform and more troopers will come in. Defeat the troopers and move to his platform to fight him for the last time.
He will use his electric power in the last phase so be careful of that and he will also use his stomp attack and sword attacks. Dodge his attacks and get his health to low. When his health is low, he will jump onto another platform and troopers will come in just defeat all the troopers and he will come down to you. Rapidly trigger the attack button and a cutscene will start in which somehow Master Yoda will fall to the ground and Darth Sidious will win and still alive.
Check our complete guide for Lego Star Wars: The Skywalker Saga here.