Have a saved game file from Rainbow Six: Vegas or Splinter Cell: Double Agent on your hard drive or memory card to unlock extra headgear items unique to each of those games available when you customize an online character.
Successfully complete the game to unlock all weapons in Quick Mission mode.
Successfully complete a level to unlock its theater options.
Unlock 5 Decorations.
Unlock 10 Decorations.
Successfully complete the indicated misison to unlock the corresponding music video:
Successfully complete the indicated task to unlock the corresponding Decoration:
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.
Successfully complete the indicated task to unlock the corresponding decoration:
Bullz Eye: Have 100% accuracy.
Hawks Eye: Acquire all intels out of combat.
Iron Man: Do not get hit during the mission.
Predator: Have all fights engaged by you.
Team ELITE decoration: Have no teammates hit and have 50% of the enemies dead by your team.