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