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