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