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