Above all try not to stay on a platforms once the Sith is no longer on it.
Be beside him all the time, taking care of the mutated clones in the first place.
If you perform this at the right spot, the enemy will be thrown down from the platform.
you might also use Mind Trick, assuming you’ve been upgrading it.
Don’t bother with throwing Vader back the items he’ll be thrusting at you.
It’s better to fight him head-on.
The tactic of fighting Vader is easy.
Keep on blocking, as he likes to throw his saber.
In the second phase of the battle, played during pouring rain, the tactic doesn’t matter.
Starkiller is in Fury mode, so he easily breaks even through Vader’s block.
The enemy’s energy will drastically fall thanks to it.
Two moments like that and Vader will be near death.
The last phase of the battle consists of quick time vents.
Just follow the on-screen commands and choose which side of the Force you want to follow.