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