Acquiring the Force Push Ability
Once you've taken the lift down into the Tomb, head up the stairs and slide through the gap. Take out the new enemies of the area, Skungus, in order to defeat these you'll need to hit them once with you Lightsaber and then roll back before they explode. After you've dealt with the enemies, hop across the platforms to the opposite side and Wall Run across onto the Icy path.
Take out the enemies and proceed into the room ahead, climb up and continue into the next room, now climb up further and open the vent to allow the wind to blow the ball in the center and then close it, wait for it to swing towards you and then use the Force Slow Ability on it to give you some time to grab hold of it and swing across to the other side.
Wall Run across into the open room and then use the Meditation Point to restock on any Stims and update your Checkpoint, now drop down into the open area to take on your first Tomb Guardian, in order to defeat these you'll want to make use of your Force Slow Ability and keep circling them whilst getting a couple hits in. Luckily these Guardians move slowly so they shouldn't cause you too much trouble.
Note: Before Wall Running straight to the path ahead, you can use the rope to swing over to a Chest to the left that contains the Outlander Poncho.
With the Guardian taken care of, head back and open the vent to push the ball into the hole which will open up a path, take the path up to the left and slide down, use the rope to swing across and then Wall Run to the other side, now head right and to face a gap that you'll need to pass. In order to get across this you'll need to position yourself slightly to the right and jump across, if done correctly you'll land on the part that's branching out.
Go left and jump across the platforms to reach the area on the right and Wall Run across to go over the bridge, take the Skungus out that's blocking the doorway to find a Meditation Point. Head back into the room and go right to open the vent and then run to the opposite side to be blown over to the path, take out the Tomb Guardian and then climb up to the back right and open the vent, now jump into the wind to float up, slide through the gap and proceed left.
You'll eventually reach a dead end where Cal will interact with the wall and remember something from his past again, simply walk forwards and until you're teleported into the training room, here you'll need to use the Force Push Ability by pressing [R2]/[RT] at the objects that Jaro Tapal throws at you, after you've completed the training section you'll now be able to use Force Push Ability.
Note: With the Force Push Ability now unlocked you'll be able to open up more paths around the galaxy that will give you some goodies.
Obtaining two Force Essence's & Completing the Sphere Puzzle
Turn around and use the Force Push Ability to open the path up to the left and follow it around, drop down and open the path up to the right, now move the stone over to the Wall on the left and climb up to get the Tomb Guardian Force Echo as well as a Chest on the left that holds the Slivian Iron Lightsaber Material. Head back to the room where you fought the second Tomb Guardian and Force Push the Skungus into the glowing orb to open it, now interact with it to gain a Force Essence.
Tip: You'll now be able to use the Force Push Ability to push back the attacks towards the Tomb Guardian which will stun it for a few seconds allowing you to get some easy hits.
Open up the wall that you touched to learn the Force Push and go through to enter a cutscene, after the cutscene has finished you'll need to take out another Tomb Guardian and then use the Force Push Ability to open up the door ahead to face the Sphere Puzzle of this Tomb. To begin, turn around to the right and push the wall open and head through, Wall Run across and climb up, use the rope to swing yourself across to the wall and then collect the Broken Artifacts Force Echo.
Note: Before placing the first ball onto the platform you can step on a platform behind it that will lift you up to a hidden area that holds a Chest with the Balmgrass BD-1 Skin.
Drop back down and push the ball into center and place it into the hole to the left then head through the now open door ahead and then climb around to the right to push another ball down into the room. Take the second ball and push down to the right and let the wind blow it up onto the raised platform on the left, now position the ball into the hole to cause the wall to open up, head down and use the Force Push ability to break into the room with the swinging ball. Climb up and Force Push the ball into the wall to open up the path as well as making the ball fall to the ground.
Push the third ball into the room and do the same thing with it as the second, now climb up to the left and wait for the ball to fly towards you and then Force Push it onto the hole before it drops back down, now you'll be able to climb up and reach the lift. Before entering the lift, take the path out of the puzzle room that you used to come in and you should find yourself in a large open room with loads of vents, open the center vent and push the ball into the hole which will open up the ground, head below to find another Force Essence. Now take the lift up to exit the Tomb.
The Obstacle is the Way
Complete the Tomb of Eilram