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