Here is the full list of all 62 Ravaged Zombie Apocalypse achievements.
500 Zombie Headshots
50 Kills: MP5
Most headhsots in a match
Boom!
Winning always feels good
Finished Dustbowl on Hard
Finished Canyon on Hard
100 Kills: Harpoon Gun
50 Kills: Chainsaw
100 Kills: Sledgehammer
Collect 50 Gas Cans
50 Kills: SCAR- L
Escaped Liberty
Escaped Chasm
100 Kills: Crowbar
Escaped Asylum
Kill 3 or more zombies with a soda bomb or mortar round
Escaped Dustbowl
Escaped Canyon
At least 30 kills in a match
Shoot an enemy where it counts
Kill 10 enemies in a row without dying
Kill 25 enemies in a row without dying
Highest point total in the match
Most assists in the match
Avenge your last death
Kill an enemy with the spiked bat
Kill 5 enemies in a row with the spiked bat
First kill of the match
10 nut shots in one match
Run someone down with the vehicle
Destroy 5 enemy vehicles
Kill an enemy from the gyrocopter or little bird
Have the highest KDR in the match
Kill an enemy with an explosive from 400 yards or more
Fall at least 500 feet
Jump over 100 feet in the air with a vehicle
Capture the resource 3 times in one match
Save 5 resources in one round
Kill an enemy with the soda bomb
Kill two enemies at once
Kill three enemies at once
Kill four enemies at once
Kill five enemies at once
First death of the match
50 Kills: Uzi
50 Kills: AN94
200 Kills: 50cal HMG
100 Zombies Ran Over
Complete All maps once with 2 or more players: Medium
Complete All maps once with 2 or more players: Easy
Complete All maps once with 2 or more players: Hard
Complete all maps once solo: Easy
Complete all maps once solo: Medium
Complete all maps once solo: Hard
Finish each map 5 times
Get the Resource to 10 Checkpoints
Get the Resource to Final Checkpoint
Finished Asylum on Hard
Finished Chasm on Hard
Finished Liberty on Hard