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