Shoot off 100 Helghast helmets during battle

Complete Blood Meridian on any difficulty level

You killed a Rockstar in multiplayer.

Reach max level with one class in the Cooperative campaign.

Get 30 headshots while scoped in with the Fareye or Marksman in the single player Campaign.

Collected 10 Vault-Tec Bobbleheads

Defeat the Concubine without using grab.

Learn about the world, and Elika's history.

Use the environment against an enemy.

Defeat the Alchemist without using the acrobatic attack.

Talk to Elika.

Completing the Canyon.

Win a wall mini-game in combat.