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