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