This is awarded upon completion of the mission AMBUSH.
Asajj Ventress 2/6
Ok you start this level off as the great master yoda.
Start down the path and use Lt Thire and his mini gun to break the gold block. Now use yoda to reassemble them and back to the mini gun to destroy them again, this will block the enemy path.
Do the same with the shiny block on the far side this time using Jek (rocket dude) and yoda.
Kill all the super battle droids who break through the wall and follow that path.
Use mini gun dude to shoot the wall at the end.
Cutscene
Now as yoda grab a super battle droid and use him to blow up the wall blocking your path and continue on.
Jump down the ledges and use the rocket dude to take out the tank guns and then the jedi marker to take the tank out.
On the 2nd tank force grab the super battle droid and use him to take out the tank guns then use the jedi marker.
For the 3rd tank use a clone trooper to grapple each side and then use the jedi marker.
Now you need to kill 5 droideka's. Hit them till they die, the red shielded ones cannot be harmed. push them about into the holes and force push one uder the silver rocks then use rocket dude to blow them up.
Once they are dead cutscene and mission ened.