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