| Achievement | How to unlock |
| Airborne - Casual (10 points) | Complete Act 5 "Airborne" on Casual difficulty.
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| Airborne - Elite (20 points) | Complete Act 5 "Airborne" on Elite difficulty.
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| Airborne - Skilled (15 points) | Complete Act 5 "Airborne" on Skilled difficulty.
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| All Fall Down (10 points) | Kill 3 enemies at one time during Time Stop.
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| Alpha District - Casual (10 points) | Complete Act 1 "Alpha District" on Casual difficulty.
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| Alpha District - Elite (20 points) | Complete Act 1 "Alpha District" on Elite difficulty.
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| Alpha District - Skilled (15 points) | Complete Act 1 "Alpha District" on Skilled difficulty.
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| Alpha District Revisited-Casual (40 points) | Complete Act 6 "Alpha District Revisited" on Casual difficulty.
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| Alpha District Revisited-Elite (70 points) | Complete Act 6 "Alpha District Revisited" on Elite difficulty.
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| Alpha District Revisited-Skilled (55 points) | Complete Act 6 "Alpha District Revisited" on Skilled difficulty.
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| Anytime, Anyplace (25 points) | Win a Ranked match on every map.
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| Are You Cheating? (20 points) | Score 30 headshots with any weapon in multiplayer games.
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| Beginner's Luck (15 points) | Complete a level without dying on Casual difficulty.
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| Berserker (30 points) | Go on a Reaper Spree.
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| Boy in the Bubble (30 points) | Score 30 kills while trapped in a Time Grenade.
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| Bullets Are Expensive (20 points) | Kill 25 opponents with melee attacks in multiplayer games.
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| Death-Proof (35 points) | Complete a level without dying on Elite difficulty.
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| Did I Do That? (30 points) | Score a Fury Kill.
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| Disarmed! (15 points) | Shoot 5 weapons out of enemy hands.
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| Get It Off Me! (5 points) | Remove a stuck Clutch Grenade using Time Powers.
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| Have It Your Way (10 points) | Host and complete 10 games with custom presets.
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| I Don't Rent, I Own (25 points) | Win a Ranked Deathmatch game by at least 5 kills.
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| Jack of All Frags (25 points) | Win a Ranked match in every game mode.
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| Keep Away! (25 points) | Win a Ranked Capture the Flag game without the other team capturing your flag.
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| King Me! (25 points) | Win a Ranked King of Time game by at least 5 kills.
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| Look What I Can Do (5 points) | Walk on water using Time Powers.
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| Munitions Plant - Casual (10 points) | Complete Act 4 "Munitions Plant" on Casual difficulty.
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| Munitions Plant - Elite (20 points) | Complete Act 4 "Munitions Plant" on Elite difficulty.
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| Munitions Plant - Skilled (15 points) | Complete Act 4 "Munitions Plant" on Skilled difficulty.
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| MVP (20 points) | Capture 25 flags in Capture the Flag.
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| Not Even Close (25 points) | Win a Ranked 1v1 game without dying once.
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| Nuclear Winter Wonderland (25 points) | Win a Ranked Meltdown Madness game by at least 30 seconds.
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| Pickpocket (10 points) | Swipe 10 weapons out of enemy hands using Time Powers.
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| That Guy Is Swift (25 points) | Complete a level without dying on Skilled difficulty.
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| The First of Many (10 points) | Win a Ranked match.
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| The Forgotten - Casual (10 points) | Complete Act 3 "The Forgotten" on Casual difficulty.
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| The Forgotten - Elite (20 points) | Complete Act 3 "The Forgotten" on Elite difficulty.
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| The Forgotten - Skilled (15 points) | Complete Act 3 "The Forgotten" on Skilled difficulty.
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| The Stronghold - Casual (10 points) | Complete Act 2 "The Stronghold" on Casual difficulty.
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| The Stronghold - Elite (20 points) | Complete Act 2 "The Stronghold" on Elite difficulty.
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| The Stronghold - Skilled (15 points) | Complete Act 2 "The Stronghold" on Skilled difficulty.
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| TimeShift Champion (50 points) | Win 100 multiplayer games.
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| TimeShift Veteran (25 points) | Play 100 multiplayer games.
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| Very Gracious (15 points) | Host a dedicated server for 48 hours total then quit.
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| Yoink! (20 points) | Retrieve 50 flags in Capture the Flag.
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| You're It (10 points) | Tag 15 enemies with Clutch Grenades.
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| Is On Your Side (25 points) | Kill 50 opponents in Time Grenades or Time Fields.
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