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