Star Wars Jedi Knight: Jedi Academy, Mission 13 (Vjun) Bast Castle

Level 13 Bast Castle - Vjun, Star Wars Jedi Knight: Jedi Academy.
Part 1. Jaden Korr and Kyle Katarn are called in to investigate and stop any Disciples of Ragnos that might be trying to siphon force energy from the planet Vjun. While on the planet, they discover someone is there and decide to land on the lower part of Darth Vader's castle - Bast Castle - and work their way up to the top. They journey along the canyon valley trying to gain access to the castle underworks. Just before the entrance, the two of them discover that it is being blocked by two Imperial TIE Bombers. Jaden and Kyle, then make their way to an upper level, where a turbolaser sat. Jaden used the turbo laser to take out the two TIE Bombers.
Part2. Once in the underworks, Jaden and Kyle start to work their way up, fighting off Stormtroopers and Imperial Officers. Once at the top, Jaden and Kyle are split up as a boulder crushes the platform Kyle is standing on and sends him tumbling back to the bottom. Kyle tells Jaden that he'll catch up and that Jaden is to go away.
Part 3. Jaden, then continues on his way to the top of the Castle where he discovers Rosh Penin, Jaden's former Padawan friend, who has then turned to the dark side, standing along with the Kothos Twins holding the Scepter of Ragnos. Jaden confronts Rosh, killing the Kothos Twins, and defeats Rosh, only to have Kyle enter the room before he can do anything. At that moment, Tavion reveals herself from behind a pillar and informs Jaden and Kyle that she is behind the Disciples of Ragnos. She takes Jaden's lightsaber and uses it to cut down the ceiling, allowing her and Rosh to escape. Kyle and Jaden escape using Kyle's lightsaber to cut through the floor as Kyle holds up the rubble using a force shield. They return to the Jedi Academy on Yavin IV to report to Luke Skywalker what they learned on Vjun.