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