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