Complete the indicated task to unlock the corresponding mission.

Bangkok Part 1: Complete Story mode under the Normal or Hard difficulty.
Bangkok Part 2: Complete the "Bangkok Part 2" bonus mission.
Goodnight Sweetheart: Complete all Training missions.
Trapped In The Hornets: Earn the Combat Sharp Shooter Rating 4 career rating.
Up A Column Without a Paddle: Earn the Elite Weapons Expert Rating 4 career rating.