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