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