Chat with the owner of the Koboh cantina

Defeat an Inquisitor

Electrocute 50 enemies (without Motoko's help)

Obtain all the Trophies.

Fully distract 25 enemies with rocks.

Kill Hoyt.

Complete Riley's interrogation.

Liberate all outposts.

Slay 100 Zombies using Caustic, Fire, or Shock damage.

Fight through the Halperin Hotel to make contact with the authorities.

Survive a plane crash, get bitten, and create your first Zombie-Free Zone.

Kill 4 enemies simultaneously with one explosion.

Kill Vaas.