Zero Hour

1. 
   Prepared & Ready

   You have gone through the training ground tutorial
   82%
2. 
   Hawk Eye

   Place and Utilize Spy Cam
   12%
3. 
   Grenadier

   Get your first grenade kill
   12%
4. 
   Bomber

   Get a C4 kill
   3.5%
5. 
   Bootcamp

   Get a good Training Ground Time
   1.0%
6. 
   Booby Trap

   Get a kill with a door trap
   2.6%
7. 
   Gun Shift

   Pick up the attacker’s gun
   6.6%
8. 
   Bomb Specialist

   Defuse a bomb
   30%
9. 
   Lone Wolf

   Survive a 1v1 situation
   9.9%
10. 
    ACE!

    Kill all of the enemy team single-handedly
    1.5%
11. 
    Savior

    Extract hostage
    2.2%
12. 
    Wings Of Steel

    Reach Top Tier
    0.8%
13. 
    The Roc

    Reach Tier 4
    0.8%
14. 
    Minotaur

    Reach Tier 6
    0.9%
15. 
    Bird Of Prey

    Reach Tier 9
    2.2%
16. 
    Venomous

    Reach Tier 2
    0.8%
17. 
    Best Friend Forever

    Take your K9 into a mission
    5.0%
18. 
    Tasting Justice

    Your K9's first bite in a mission
    4.1%
19. 
    On a Roll

    Complete a 10 day daily challenge streak
    0.3%
20. 
    Cuffed and Stuffed

    Perform 10 arrests in co-op
    2.5%
21. 
    A Regular Joe

    Complete all co-op missions in regular with 100 score
    0.3%
22. 
    No Room for Error

    Complete all co-op missions in hardcore with 100 score
    0.3%
23. 
    Enemy of the State

    Arrest Ahmed Al Zoori
    0.5%
24. 
    Killer Instinct

    Arrest Abul Kashem
    0.7%
25. 
    Above and Beyond

    Complete Paradise City with a score of 80 or more
    0.9%

Names, descriptions and icons are the game’s own, as Steam publishes them; the share is how many owners have unlocked each, from Steam's global figures for 25 of them.