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