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