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