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