Here is the full list of all 54 Dead Island: Epidemic achievements.
Finish a Scavenger mission
Win a Scavenger mission within 20 minutes
Win a Scavenger mission with atleast 200 supplies ahead of the other teams
Kill 100 Walkers during a Scavenger mission
Capture five Supply points during a Scavenger mission
Kill 5 Zombies with one attack/skill
Control 4 Supply points at the same time during a Scavenger mission
Kill 100 Walkers during a cooperative PvE mission
Finish a cooperative PvE mission
Complete a mission while playing with a party
Kill 100 Zombies!
Kill 10 Players during a Scavenger mission
Survive the Tutorial
Deliver 150 supplies 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 without dying
Complete a cooperative PvE mission without dying
Kill 10 Zombies with one attack/skill
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 10 cooperative PvE missions
Complete 100 cooperative PvE missions
Complete 250 cooperative PvE missions
Complete 1 000 cooperative PvE missions
Complete 2 500 cooperative PvE missions
Obtain 5 Weapon Blueprints
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 1 000 Zombies!
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!