Play as Patty
Successfully complete Chapter 1 to unlock Patty. Her abilities are based on Nadia.
Play as Rhombus
Successfully complete Chapter 1 to unlock Cyrus. His abilities are based on Cyrus.
Play as Vault Dweller
Successfully complete Chapter 1 to unlock Vault Dweller. His abilities are based on Cyrus.
Defeating the Raider Commander
Use an incendiary cannon, two barrel shotgun, sledge hammer, and 35 stimpacks. Note: This was done with a level 9 Cain on the normal difficulty setting.