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