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