Star Wars: Jedi Knight: Dark Forces II: Level 6: Into The Dark Palace & Level 7: Yun The Dark Youth.

The object to level 6 is find a route through the ruins to the palace tower. Gain entry into the tower via the upper plaza deck. Find a way into the control room above the inner door. Once the door is open, fight your way passed the guards in the main anteroom and find passage to the top of the palace. The object to level 7 is to defeat Yun.