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