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