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