As for the no Luke/ Vader battle. I was referring to the duel they had over Endor. You do not play that duel. You do face Vader in Cloud City, but with help. The game is designed for at least 2 player onscreen at all times. Whether its your buddy or the AI, there are always 2. Hence, when you battle Vader in Cloud City, you play as Luke, but there is a second player (either AI or friend) playing as R2-D2. Basicly Vader jumps around and lands on "traps", that R2 can set off to harm Vader. As for the Luke/Vader battle in ROJ. Doesnt happen. Vader brings Luke into the throne room, and Palpy immediatly begins to fry Luke. Vader says no way, and then Luke and Vader team up to face Palpy. That was probably the games only disappointment, to me. And yes, when Chewie gets close enough to people, he can rip their arms off instead of firing his bowcaster.