Starkiller is more deadly in this sequel and you can make him more destructive by upgrading his skills and weapons with the holocrons you can find in the game.
You can upgrade your skills, and weapons in the game using the experience points, saber crystals, and bacta tanks scattered. There are total 45 holocron that you can find in the game, each specified below with a brief description of where you can find it.
1# Saber Crystal
You will find it in front of you after force gripping the platform to get across the gap, you can’t miss it.
2# Saber Crystal
Right after first Saber Crystal, when you are running throw the fires and do a dash to evade two stormtroopers attacking you, its behind them. Another easy to get.
3#Green Bacta Tank
After second Saber Crystal, when you come across a circular area with TIE Fighters shooting at you, it’s on the platform to the left.
4# Experience Point
When you pass through the forcefield, throwing objects at the red terminals, you will find it on the table in the middle of the next room.
5# Experience Point
In your first encounter with the Jumptroopers, you will find it near the first jumptrooper over the gap.
6# Blue Bacta Tank
Just when you defeat the second mech, you will find it on the door to your left.
Cato Neimoidia: The Eastern Arch
7# Saber Crystal
After you have defeated the Sith Acylote, go to the left platform with all the crates.You will find this holocron behind the crates.
8# Experience Point
After you have raised the platforms, you will find this holocron right next to the highest platform where you jump to continue your game.
9# Saber Crystal
You will find it on your left when you force push open the second door.
10# Saber Crystal
Just after the jumptroopers spawn with two red force fields, go to the next room with the bowling ball. Move the bowling ball and get this crystal.
11# Blue Bacta Tank
Your first encounter with the gunship, while crossing the bridge you will see it in the middle hanging in the air. Can’t miss it.
12# Green Bacta Tank
Just when you blast open the doors after bridge sequence, you will find it in front of you on a walkway next to Stormtrooper sniper.
13# Experience Point
In the casino area with the game machines, you will find it on the walkway farthest to your fight, right in the middle, just like previous holocron.
Destroy the 3 game machines in front of Jabba the Hutt hologram and it will spawn this costume holocron.
Cato Neimoidia: The Western Arch
15# Experience Point
Right after you defend the tram from the gunship, you will find it inside the docking area.
16# Saber Crystal
Right after your fight with AT-MP, you will see three boxes stacked on each below a platform. Now move them so you can get to the platform above. When you are on the platform, you will find it there just below you.
17# Blue Bacta Tank
In the room just left to the bowling ball after the fight with the 2 cyromechs.
18# Green Bacta Tank
When you are making your way through barricades, can’t miss it.
The Tarkose Arena
19# Experience Point
After destroying the gunship, you will find it in the room having dinosaur skeleton.
20# Saber Crystal
From the room you found #19, jump below on a small platform to grab this Saber Crystal.
Dagobah: The Vision
21# Experience Point
On top of your ship.
22# Blue Bacta Tank
Lift a big rock behind your ship to get this holocron.
23# Saber Crystal
Right to the Yoda’s house in the foggy area.
24# Green Bacta Tank
Go past Yoda house, you will find it under a rock to the left. Lift the rock to retrieve it.
25# Saber Crystal
From the place you found the Green Bacta Tank, keep moving and you will see the Saber Crystal.
26# Experience Point
Right on the path of where you got the previous holocron.
The Rebel Ship Salvation: Aboard The Salvation
27# Saber Crystal
After the door where you gain the Repulse ability.
28# Green Bacta Tank
After watching Juno behind the forcefield, go back to the room you just were and destroy all 8 tubes. Go to the next room and destroy the 4 tubes and go to the dark corridor and use the power core on that door. There you will find 3 more tubes, middle one has Green Bacta Tank, but destroying all will earn you Master of Disaster achievement/trophy.
29# Blue Bacta Tank
After this cutscene where Starkiller says “What could have done this?” and shows the internal damage. It is just below you get it quickly before everything starts falling down.
30# Experience Point
You will find it between the two electric wheels in the engine room.
31# Experience Point
You will find it on your way through the spinning machines, just before you drop down to the shaft.
32# Saber Crystal
Continue in charred tunnel after defeating Terror Walker and you will come across this Saber Crystal.
Battle for the Salvation
33# Experience Point
When you are fighting group of enemies and AT-AT and 2 AT-MPs appear, jump on the walkway to your right where snipers should be and go into the pod that just appeared. You will find this holocron inside.
34# Green Bacta Tank
Destroy the 13 unstable cores in engine room to get this holocron.
35# Saber Crystal
You will notice it while fighting the multi lightsaber fighters on your way to the right.
36# Saber Crystal
Inside the pod, the mech came from.
37# Blue Bacta Tank
Left to the hallway where snipers are shooting you from far, you will find it in the middle tube in front of you.
38# Experience Point
Drop down from the elevator you moved to drop down, and you will find this holocron in front of you.
39# Saber Crystal
Look left from the top of cannon after destroying the Star Destroyer, and you will find this Saber Crystal, drop down to get both of blocks to get this holocron.
Kamino: The Return
40# Green Bacta Tank
Top of the wreckage where you start your mission.
41# Experience Point
Behind the windows from the the spot you got the previous Green Bacta Tank.
42# Blue Bacta Tank
After the bridge is destroyed, you will find this holocron on the upper walkway of the room you enter.
43# Saber Crystal
When you meet up with Kota, you will see this crystal just behind the two AT-MP’s on a wind turbine.
44# Saber Crystal
Down the elevator, left of the room facing the doors, right when you come across fire mech and some spiders.
45# Experience Point
You will find this holocron on the top of cloning facility in one of tubes. Break the tube near the set of circles that aren’t turning to get this holocron.