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