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