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