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