Kill an enemy of every type in a single player campaign.

Finish the single player campaign on any difficulty.

Complete all the Downtown missions in a single player campaign.

Purchase all the upgrades for one of your weapons in the single player campaign.

Spend two hours in the Veil in a single player campaign.

Kill 50 enemies with melee attacks in a single player campaign.

Kill 3 floating enemies.

Get kills using a pistol, rifle, submachine gun, and grenade in a mission without dying

Complete Training, Camp Taccoa

Complete the single player campaign on Hardened or Veteran Difficulty.

Complete 'Of Their Own Accord', 'Second Sun', and 'Whiskey Hotel' on Veteran Difficulty.

Complete 'Contingency' on Veteran Difficulty

Complete 'Wolverines!' and 'Exodus' on Veteran Difficulty.