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