Go and follow the map toward a very narrow entrance.  There will be a pile of rocks that you will find at the entrance, so go ahead and get Holocron 132 there. 

As you go by, there is a large green plant that can be chopped down for Holocron 133.  You can then keep going along and move aside a large rock to gain Holocron 134.  There is also another Health Holocron in this area, as well as Holocron 135 hidden amongst some vines near some wreckage. 

Keep on going until you get to the bunker, where there are stormtroopers are.  They will never quit, so stop trying.  Instead, knock down the two tall towers and grab Holocron 136 that will soon appear. 

The path will soon get narrow, so Force Push all along the left wall until Holocron 137 shows.  Do not go to the bunker entrance until you have this last precious Holocron.  This one is pretty hard to find, and it very easy to stray out of the way until you will find yourself in an area that you don’t want to get into too soon.

When you get to this area, you will meet the boss, who is riding a pimped-out AT-ST.  Taking him out isn’t as simple as hitting him until he falls, which is the usual ploy. No, this last enemy, Ozzik Sturn, requires a little bit of strategy to defeat.

The first thing you should do is start to throw anything you have at him.  That includes lightsabers, rocks, and some of those red barrels that explode.  This will only cause his health to drop a little, and then he will depend on nearby shield generators for defense.  These shield generators will cover Ozzik with a shield that is impenetrable. However, this force shield is to your advantage as well.  As one shield generator covers him, it leaves the generator itself vulnerable.  All you need to do now is chop the three supports, and use the force to push them off. 

Stormtroopers will come out, but you should probably stay on the mission of removing the generators.  They are very pesky distractions, though.  Eventually, all the shield generators will fall.  You can then work a number on the modified AT-ST with a little bit of lightning, as well as some rocks. 

Just keep working him down, and then he will fall.  You will then meet special guest star Princess Leia!