Go ahead and start off on the easy level. You need to do every difficulty if you want to get all the achievements anyways so you might as well start off easy and learn your way around.
Unless like me, once you do it you decide "Ehh, not worth doing again".
You start off sliding down the ramp of your ship and dropping to a landing pad below.
Get ready for a fight! Once you land you are hammered by Every Storm Trooper known to the game. If you head up the walkway, some energy shields will pop up and block some of the fire coming from the ones guarding the door. I found it easiest to shove most of the baddies off the side of the platform rather then fight them head on.
Once you deal with the soldiers there are two beams forming an X in front of the door, use the force to move them up and the door will open.
Once inside you need to fight more baddies then use the force to raise the door on the right side (as you enter) of the entrance room. Run through the door before it drops shut.
Drop down the hole and enter the "Training Arena". A bunch of droids armed with Lightsabers will start attacking you. You can earn a ton of points fighting the droids and they will keep coming until you take out the "projectors" that create them. When you get tired of fighting droids, jump up to the second level and run around destroying the projectors that encircle the arena. Kill off the last of the droids and a cut scene will show a door on the upper level opening.
Go through that door and down the hall. You will come out on a broken balcony in the Chasm.
Kill off the flying stormies that keep pestering you and use the force to lift the broken walkway on your right (it will be flashing blue). Again a cut scene shows the door that you entered the "Training Arena" opening back up. Head back down the hall and go back through the arena killing the droids that have entered the room when the floor opened up. Go back out the door that you used to enter the Arena and go back up the hole, use the force to raise the door and go back to the main entrance area.
Fight more baddies that appear (where were they before?) and use the force to blast the face off the statue, then use the force to clear away the debris blocking the hallway on the other side (left side as you enter) of the entrance room.
Go down the hall and once again, use the force to raise a door. Stand off to the right side as you open the door so you don't get nailed by the snipers inside the room. Kill all the baddies in that room (use the big ball to kill 10 for an achievement) and go through the hallway further in the room on the right. Drop down the hole, walk down the hall and you are on a balcony in the chasm again. Toss your Lightsaber at the statue to send it crashing to the ground.
Go back up the hole, kill more baddies (where do these guys come from), use the force to lift the door again, exit the room, down the hall, back to the main entrance, kill more baddies and finally force jump the chasm (Double Jump and Dash to make it across ala Junk Yard), I had the hardest time making this jump. Just keep trying and wait until the very last step to jump.
Now the game gets really boring. Watch a cutscene, use the force to move a glowing ball along a glowing line, rinse and repeat. Use the force to move some broken walkway segments into place so you can jump across the "void". This part is very lame.
Finally you reach the Boss. Just keep jumping and hacking and blasting and shocking him.
You will eventually beat him, game over.
Overall, not worth the $10.
