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