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