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