For me Pavel's mission was only the second-best. The fights were too contrived imo. Khan's mission on the other hand (especially the first half of it) was one heck of a brilliant ghostride. The only bad thing about all of these missions is the low replay value which comes with SP mode, the Stalker mission being the only exception in this case. All in all i'm happy about having purchased the season pack. By the way, the metro wiki is advertising a petition asking 4A games to develop a multiplayer mode for Last Light!