Here is the full list of all 48 Dead Island achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Play Dead Island at least 28 days after starting it for the first time.
Kill 250 zombies using blunt melee weapons.
Kill 150 enemies using Analog Fighting controls.
Complete act 1 with 4 different characters.
Kill a Ram using tackle skill.
Reach level 50
Play with 10 different co-op partners for at least 15 minutes each.
Complete 5 quests with 3 co-op partners.
Complete 25 quests while playing with at least one co-op partner.
Complete act 4.
Explore the entire island.
Complete act 3.
Kill 100 enemies with Fury attacks.
Find 120 collectibles.
Loot 25 Exceptional Weapons.
Kill 250 zombies using firearms.
Kill a Butcher using an axe
Complete act 2.
Finish 75 quests cumulatively.
Complete 5 quests in a single co-op game with the same partners.
Kill 50 human enemies.
Customize 25 weapons
Find 60 collectibles.
Kill a Suicider with a grenade.
Heal yourself with a medkit 100 times.
Kill an Infected with a grenade blast.
Kill 10 zombies in a row with headshots.
Set 10 zombies on fire simultaneously.
Reach level 25.
Kill 250 zombies with modified weapons.
Use a large medkit to heal an injury of 5% or less.
Complete act 1.
Kill 5 Infected in a row with a single blow.
Sever 100 limbs.
Kill 250 zombies using edged melee weapons.
Use a hammer to kill a series of 15 zombies without taking damage.
Drive a total distance of 10 kilometers.
Save 5 people besieged by zombies.
Kill 50 zombies using a vehicle.
Create weapons to rival the gods of fire or thunder.
Kill 25 zombies with your bare fists.
Kill a zombie with 10 different melee weapons.
Reach level 10.
Travel a distance of 20 kilometers on foot.
Join another player's game.
Breach a locked door with the first blow.
Create a customized weapon.
Play in a co-op team of 4 different playable characters.