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