Here is the full list of all 54 Dead Island: Epidemic achievements.
Finish a Scavenger mission
Capture five Supply points during a Scavenger mission
Control 4 Supply points at the same time during a Scavenger mission
Complete 10 cooperative PvE missions
Obtain 5 Weapon Blueprints
Kill 1 000 Zombies!
Complete a cooperative PvE mission without dying
Kill 5 Zombies with one attack/skill
Finish a cooperative PvE mission
Complete a mission while playing with a party
Kill 100 Walkers during a cooperative PvE mission
Kill 100 Zombies!
Survive the Tutorial
Kill 10 Players during a Scavenger mission
Deliver 150 supplies during a Scavenger mission
Kill 100 Walkers during a Scavenger mission
Kill a Hoarder during a Scavenger mission
Kill two players consecutively within 10 seconds in a Scavenger mission.
Kill three players consecutively within 10 seconds in a Scavenger mission.
Kill four players consecutively within 10 seconds in a Scavenger mission.
Win a Scavenger mission within 20 minutes
Win a Scavenger mission without dying
Kill 10 Zombies with one attack/skill
Win a Scavenger mission with atleast 200 supplies ahead of the other teams
Be the first team to complete the Barricade Race during a Scavenger mission
Complete 10 Scavenger Hunt Missions
Complete 100 Scavenger Hunt Missions
Complete 250 Scavenger Hunt Missions
Complete 1 000 Scavenger Hunt Missions
Complete 2 500 Scavenger Hunt Missions
Complete 100 cooperative PvE missions
Complete 250 cooperative PvE missions
Complete 1 000 cooperative PvE missions
Complete 2 500 cooperative PvE missions
Obtain 25 Weapon Blueprints
Obtain 75 Weapon Blueprints
Obtain 150 Weapon Blueprints
Craft 10 weapons
Craft 50 weapons
Craft 150 weapons
Craft 250 weapons
Craft 500 weapons
Kill 10 000 Zombies!
Kill 53 597 Zombies!
Kill 100 000 Zombies!
Kill 250 000 Zombies!
Kill 1 000 000 Zombies!
Kill 25 enemy players
Kill 250 enemy players
Kill 1 000 enemy players
Kill 10 000 enemy players
Kill 25 000 enemy players
Kill 100 enemy players
Kill 25 000 Zombies!