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