Act 1 (elevated risk): Successfully complete Act 1 under elevated risk.
Act 1 (low risk): Successfully complete Act 1 under low risk, normal risk, or elevated risk.
Act 1 (normal risk): Successfully complete Act 1 under normal risk or elevated risk.
Act 2 (elevated risk): Successfully complete Act 2 under elevated risk.
Act 2 (low risk): Successfully complete Act 2 under low risk, normal risk, or elevated risk.
Act 2 (normal risk): Successfully complete Act 2 under normal risk or elevated risk.
Act 3 (elevated risk): Successfully complete Act 3 under elevated risk.
Act 3 (low risk): Successfully complete Act 3 under low risk, normal risk, or elevated risk.
Act 3 (normal risk): Successfully complete Act 3 under normal risk or elevated risk.
Master Tutorial Challenge 1: Kill all enemies without getting hit.
Master Tutorial Challenge 2: Kill enemies with one headshot per enemy.
Master Tutorial Challenge 3: Kill the tank using only one satchel charge.
Master Tutorial Challenge 4: Have your team kill all five enemies.
Mission Accomplished: Successfully complete all secondary objectives.
Single Player Master: Unlock all other single player Decorations.
Tutorial Walkthrough: Successfully complete the tutorial.