Here is the full list of all 16 Zero Hour achievements.
Pick up the attacker’s gun
Survive a 1v1 situation
Kill all of the enemy team single-handedly
Extract hostage
Reach Tier 4
Reach Tier 6
Reach Tier 2
Get a good Training Ground Time
Reach Top Tier
Reach Tier 9
Get a C4 kill
Place and Utilize Spy Cam
Get a kill with a door trap
Defuse a bomb
Get your first grenade kill
You have gone through the training ground tutorial